In a diaphragm cell, hydrogen is discharged by the reduction of _.
Correct answer: A. Water
- A. Water
- B. HCI
- C. Na+
- D. NaCl
Explanation
In a diaphragm cell, which is a type of electrolytic cell used for the production of chlorine and sodium hydroxide, hydrogen gas is discharged at the cathode. The cathode reaction involves the reduction of water molecules. At the cathode, water (H2O) is reduced to produce hydrogen gas (H2) and hydroxide ions (OH-). The overall reaction can be represented as: 2H2O + 2e- -> H2 + 2OH- Therefore, hydrogen is discharged by the reduction of water in a diaphragm cell. Option A) Water is the correct answer.
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About Redox Reactions
Redox reactions involve oxidation and reduction occurring together, with electrons transferred between species or oxidation numbers changing. The topic covers assigning oxidation states, identifying oxidizing and reducing agents, balancing redox equations by oxidation number or half-reaction methods, and connecting chemical changes with galvanic and electrolytic cells.
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