... of the container. 2Cl‾ (aq) à Cl2 (g) + 2e‾ Diagram 2: Mercury Cell - Electrolyser At the mercury cathode sodium ions are discharged instead of hydrogen ions in the following manner: Na+ (aq) + e‾ à Na (l) The now discharged sodium then dissolves in the mercury to form a liquid amalgam which is then run into the second stage of the reaction; the decomposer. Water is pumped ... into the tank containing graphite blocks suspended on the mercury. Sodium is then oxidised and the ions pass into the solution as shown below: Na/Hg (l) à Na+ (aq) + Hg (l) + e‾ Hydrogen gas and h...

• Word Count: 1092
• Approx Pages: 4
• Grade Level: High School

... as the resting potential and is generally said to be around -70mv. When a stimulus stimulates a receptor, a potential difference is created across the cell. This is detected by the electrosensitive Sodium (Na +) channels closest to the stimuli, which consequently open allowing sodium ions to diffuse in as a result. A local current is produced that causes the next sodium channel to open and so ... it to return back to the resting potential. Sodium channels then close and will not reopen for a short period of time known as the absolute refractory period. At this time Na+ ions are actively...

• Word Count: 928
• Approx Pages: 4
• Grade Level: High School

... when you electrolysed the molten salt. • H20(l)  H+(aq) + OH- (aq) The Ions present are: Na+, Cl-, OH- and H+. At the Cathode: The ions present here are Na+ and H+. The most reactive ion is going stay in the solution. Looking at the reactivity series, Na+ (sodium) is more reactive than H (hydrogen) and so will remain in the solution, as hydrogen gas bubbles ... ...

• Word Count: 989
• Approx Pages: 4
• Grade Level: High School

... anions and cations together. Coordination Number- of an atom is the number of ions opposite charge that surround the ion in a crystal. Ex. NaCl, because Na positive and has ion is surrounded by 6 Cl negative ions, Na positive has a coordination number of 6. Metallic Bonds- consists of the attraction of the free-floating valence electrons for the positively charged metal ions. These bonds ... ...

• Word Count: 536
• Approx Pages: 2
• Grade Level: High School

... of solutes. FACILITATED DIFFUSION: Utilizes membrane protein to allow charged molecules to freely diffuse in and out of the cell. The channels come into greatest use with small ions like K+, Na+, Cl-. The speed of facilitated transport is limited by the number of protein channels available, whereas the speed of diffusion is dependent only on the concentration gradient. Facilitated Diffusion: Carrier ... ...

• Word Count: 954
• Approx Pages: 4
• Grade Level: Undergraduate

... non-metal negative ion's ending is changed to "ide". However, there is only an exception. When the negative ions are polyatomic ions, the name remains unchanged. Examples: 1. MgO 2. NaOH CATION: Na+ is named as sodium (Group I metal) CATION: Mg2+ is named magnesium ANION: OH- is named as hydroxide ANION: O2- is named oxide Name of compound is sodium hydroxide Name of ... ...

• Word Count: 979
• Approx Pages: 4
• Grade Level: High School