... look at the rates of reaction between marble chips and hydrochloric acid. Task My task is to measure the rate of reaction between marble chips (CaCO3) and Hydrochloric acid (2Hcl). Diagram Plan The equipment I will be using for this experiment will be as follows: Conical flask, Delivery tube, Bung, Measuring cylinder X2, Water trough ... insuring that no air escapes in to the cylinder. I will no place the measuring cylinder into the water and leave to rest. I will now measure out 50ml of 2Moler Hydrochloric Acid into my 2nd measuring cylinder, and then pour it into the Conical flask. I ...

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... Beaker Water 2.76g of Potassium Carbonate 2.94g of Calcium Chloride Dihydrate Filter Paper (2) Glass Funnel Apron Goggles Methods : 1.) Put on apron and goggles for safety purposes. 2.) Write a balnced equation with the 2 given reactants. 3.) Place the balance at 0 and measure the paper filter. 4.) Measure 2.76g of Potassium Carbonate, put in a 50mL beaker, and mix with 50mL of water until completely dissolved ... . 5.) Measure 2.94g of Calcium Chloride Dihydrate, put in a 50mL beaker, and mix with 50mL of water until dissolved. 6.) Combine the 2 compounds together in a 150mL beaker. ......

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... Balance Procedure (record all data to table) 1. a) Clean and flame dry an evaporating dish and allow to cool. b) Find the combined mass of the evaporating dish and watch glass (mass a). 2. Measure 2.50 g of sodium hydrogen carbonate (NaHCO3) to the evaporating dish, while the dish is remaining on the balance (mass b). 3. Set up the ring stand. Place the evaporating dish upon the ... NaHCO3. c) Add acid until all bubbling ceases. 5. a) Remove watch glass and heat the dish gently, until almost all the liquid is gone. (Avoid spattering) b) Replace watch glass, allowing a small opening for ...

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Rates of reaction Introduction This experiment is to investigate the rate of reaction between Sodium Thiosulphate and Hydrochloric acid. The equation for this reaction is: Na2S2O3 (aq) + 2HCl (aq) 2NaCl (aq) + S (s) + H2O (L) + SO2 (g) Sodium + Hydrochloric Sodium + Sulphur + Water + Sulphur Thiosulphate ... safety goggles. • Take a piece of paper and draw a cross in the centre of it using the felt tip pen. • Measure out 25cm3 Sodium Thiosulphate using one of the measuring cylinders and pour it into the conical flask. • Place the paper under the conical flask. &bull ... ; Measure out 10c...

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... throughout the reaction Concentration:- This would be the most appropriate variable as dilutions can be prepared easily and most accurately. Volume of catalyst:- This is a hard variable to quantify and measure especially if the catalyst is in powder form. Changing the volume of catalyst would also produce too small a change in reaction rate to be able to quantify or make a statement ... about. Surface area:- Breaking up a solid into smaller pieces provides a greater surface for collisions to occur between reacting particles. This would be a good variable however again it is very hard an...

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... experiment it will be the temperature of the hydrochloric acid and the surface area of the calcium carbonate. I will be keeping all factors constant except for one variable which will be th temperature during each experiment. Prediction I predict that the rate of reaction will increase proportionally with the temperature. Which ... marble chips. The size of the marble Chips needs to be kept the same because of them either having a larger or smaller surface area for the acid to react with. If it has a larger surface area than the previous chips the results would be wrong because it has a...

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... The catalase is an enzyme, enzymes are catalysts which control the speeds of chemical reactions in cells, which lower the activation energy needed for particles to react, so that they will react more easily and are sensitive to changes in temperature. The increase in temperature gives more ... level is. Evidence To get a suitable range and a meaningful set of results I am using six different temperatures and I am taking three different readings for every temperature were the potato and the catalase are in the boiling tube, and finding the mean average. Accuracy To ensure maximum accurac...

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... check that all my pieces of magnesium are 2cm long or it will not be a fair test. The second thing I have to do is to measure 20cm2 of hydrochloric acid in to a beaker, and then I need to add the magnesium to the beaker, and then start the stop clock and then ... stop the stop clock when all the magnesium has disappeared. Then I will repeat the above steps for each of the different concentrations. Explaining My Prediction: The collision theory is when particles must collide, and must collide with enough force to make a ... experiment, I will have to correct all those possible errors I h...

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... which allows this reaction to take place and is found in the liver. Other living materials also contain catalase, e.g. potatoes. These are cheaper and easier to hand and are useful for experiments. Planning Prediction I predict that the bigger surface area of the potato chip, the more bubbles of oxygen will be produced. Justification I think my prediction will be correct; one example ... the chips exactly to 5cm and when I cut them into pieces each piece has to be cut accurately so that the surface area will equal on each piece. I also need measure out 50cm3 of hydrogen peroxide exactly...

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... of reaction depends on the type of molecules which are combining. We conducted an experiment to test the rate of reaction when Mg is added to Hcl (aq). The Formulae for this reaction is 2Hcl (aq) + Mg = MgCl2 + H2. To set off a reaction you need the reactants. Reactants are the starting materials in a chemical reaction. The reactants in the reaction above ... new bonds are formed in the product. An example of an Endothermic Reaction previously investigated is ammonium nitrate plus water. We used a thermometer before we carried out the experiment to measure the temperature which was 18 d...

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... particles which allow more collisions to take place. There are various ways of measuring the rate of reaction: Collecting and measuring a gas product. However this can be very difficult to measure for this particular reaction because the gas produced in the reaction is Sulfur dioxide which will react with oxygen and react with the solutions to produce acid rain, which will dissolve ... the amount of Sulfur produced as a precipitate is too difficult to evaluate, it will always be the same for each experiment I carry out. So therefore I will take the reciprocal of the time taken for the S...

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... brings out any anomalies and any inaccurate readings. Equipment: Thermometer, Stopwatch, Conical flask, Bunsen burner, Tripod stand, Measuring cylinder, matches, goggles, Paper marked with X. Method: I will measure out 10ml of Sodium thiosulphate and 10ml of hydrochloric acid. I will then heat the Sodium thiosulpate to 30 degrees then mix with Hydrochloric acid and time using a stopwatch the rate ... of formation of a product. I used Sodium Thiosulphate to react with hydrochloric acid. This reaction produced Sodium Chloride, Sulphur, Sulphur Dioxide and Water. Collisions between particl...

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... of bicarbonate ions (HCO3 ) from bicarbonates present in water. All green plants utilize the carbon dioxide from the atmosphere, during the daytime for photosynthesis. In plants, both photosynthesis and respiration continue alternatively during day and night, but during day time, the amount of carbon dioxide consumed ... intensity of light is low, so the amount of carbon dioxide absorbed is nearly equal to that released. Water is an important raw material for photosynthesis. During drought conditions, the photosynthesis rate decreases. Also closing of stomata, owing to less water content...

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... pH, and concentration of the yeast or hydrogen peroxide. The yeast acted as the enzyme, which produces catalase needed for our desired reaction with the hydrogen peroxide. What had to be wanted to measure was how well it reacted when the variables were changed. First off, the class needed to find a way ... told us that the reaction would give off oxygen gas, it was realized that the oxygen being created in the reaction could displace water to measure how much oxygen gas is being given off. Next came setting up the lab. Each group received and set up with a small glass bottle ... cylind...

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... O2 (gas) The products of the above reaction are oxygen gas and water, two non-poisonous molecules. In living cells, the oxygen can be used for cellular respiration and the water can be excreted Apparatus: Test Tube Bung Measuring cylinder Tray Goggles Knife Potato H202 (20 vol) Potato cutting surface Access ... to distilled water Your apparatus must be set out thusly: Under favorable conditions, the reaction occurs very fast. The maximum catalytic rate for one catalase molecule is 6 million molecules of hydrogen peroxide converted to water and oxygen per minute. The reaction product is 6...

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... ml of I2KI . Next 5 ml of the 70 ml solution was measured into one of the 11 cuvettes and placed in the spectrometer to measure the absorbance. After the initial reading, one ml of α-amylase was dropped and stirred into the to 70 ml solution. The addition ... entire experiment was repeated five more times at the following temperatures: 15°C, 30°C, 45°C, 55°C, and 60°C. Absorbencies were graphed for maximum reaction rates and optimums. The optimal temperature was 45°C with a reaction rate of 0.082 min-1 and optimal pH was 5.0 with a reaction ... Figures 3 and 4). Results After all ...

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... source to facilitate the conversion of luciferin to its oxidized form by luciferase. We will measure the nucleotide specificity of the luciferase enzyme and how it is influenced by pH changes. We will also measure how different reagents affect the luciferin and luciferase mixture, called lantern. The production of ... no active mitochondria in the lantern, there will be no ATP produced and, therefore, no reaction. Materials and Methods Although all materials needed for this experiment could be obtained at any time, speed was of the essence. The lantern reactions would only last about two ...

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Investigating The Rate Of Reaction Between Magnesium And Hydrochloric Acid. Introduction I am going to measure the rate of reaction between magnesium and hydrochloric acid. In all I am going to do two experiments the first one will look ... molar hydrochloric acid o Water Plan First I will set up the experiment then I will put 30cm cubed of hydrochloric acid inside the boiling tube, no water will be added for the first part of the experiment. I will then put in a 1cm long piece of magnesium into the tube and I will start the stopwatch and I will see ... experiment which I will do will look at...

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... of varying the concentration of acid, in the reaction between dilute hydrochloric acid and magnesium ribbon. The rate of a chemical reaction is a measure of how fast the reaction takes place. Factors The factors that could affect the rate of reaction in my experiment are as follows: Concentration ... of the reaction doubles. Therefore showing a pattern. Background Theory The collision theory describes how the rate of reaction increase (the time taken for the magnesium ribbon to disappear when it is reacted with hydrochloric acid) when the concentration of HCL increases. The theory state...

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... , one large and one small test tube, Test tube holder, flame stick, safety equipment. Procedure: A demonstration of this laboratory activity will be performed for the students. Strict attention to the demonstration is necessary to assure that the proper steps are taken. WARNING, this activity involves the use of acid and ... be attached to the lower portion of the smaller test tube, inverted and inserted, in the larger test tube. Obtain a piece of zinc and measure its mass using the balance. Record the mass below. Once these actions are completed, a small amount of acid is to be poured in...

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... activity were determined in this experiment. To attain these results, potato extract (Solanum tuberosum) was mixed with catechol and exposed to different environmental conditions, then placed in a spectrophotometer to measure and record the different absorbance readings at a 420nm wavelength. It was found that catecholase activity was optimal with a pH of 6.6 and in temperatures between 27-30 ∘C. The ... ;C, 20 ∘C (room temperature), 30 ∘C, 40 ∘C, or 50 ∘C. After 5 minutes, 1mL of enzymatic potato juice was added to all tubes. After returning them to t...

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... soon as the reaction has finishes, it all needs to be washed down the sink with plenty of water. Apparatus list: Two small 100cm3 beakers, for the Sodium Thiosulphate and Hydrochloric acid A small 100cm3 conical flask to mix the fluids in A small conical flask that has a capacity of 35cm3 A ... Sodium Thiosulphate there is, the faster the reaction will be. This is because it is a larger concentration, and so there are more particles to react; for a reaction to occur, particles have to collide with each other. Only a small percent result in a reaction. Only particles with enough energy ...

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... metal and metals are corrosive when introduced to acids. Aluminum however, best reacted to sodium hydroxide which I did not expect because aluminum, like magnesium, is also a metal. Another instruction for this laboratory experiment is to observe the metals reactivity to mercury (II) chloride. As results, magnesium had a reaction while aluminum did not. I. Introduction The theory behind this experiment is that ... metals are readily oxidized to donate their valence electrons to achieve the octet for and have the noble gas electron configuration. From first-hand experiences and common kn...

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... returns to its normal state. The insect can easily control this reaction with an inhibitor it naturally makes. Another contributor in this consideration is entropy. It is the measure of energy not available for work in the reaction that becomes energy moved to disorder. Entropy is simply a measurement of unusable energy in a closed thermodynamic system. An acid and base reaction ... Photochemists will experiment with chemical reactions. They will perform reactions normally only possible at high temperatures in room temperature under ultra-violet radiation. The reaction rate can be contro...

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... returns to its normal state. The insect can easily control this reaction with an inhibitor it naturally makes. Another contributor in this consideration is entropy. It is the measure of energy not available for work in the reaction that becomes energy moved to disorder. Entropy is simply a measurement of unusable energy in a closed thermodynamic system. An acid and base reaction ... Photochemists will experiment with chemical reactions. They will perform reactions normally only possible at high temperatures in room temperature under ultra-violet radiation. The reaction rate can be contro...

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• Grade Level: High School