What forms at the cathode in the electrolysis of molten sodium chloride?
Answer and explanation
Correct answer: D. Sodium metal, as sodium ions gain electrons at the cathode
- Step 1: Cations move to the cathode and are reduced. Step 2. . Answer: Sodium metal. Why not the others: Chlorine forms at the anode; no water is present to give hydrogen; hydroxide needs aqueous conditions.
Practise more Equilibrium, Acids, Electrochemistry and Organic Chemistry.
Free questions with an explanation for every one, and full timed Wazari Exam (Iraq Baccalaureate) - Scientific Branch mock tests.
More Equilibrium, Acids, Electrochemistry and Organic Chemistry questions
- What is the pH of a 0.01 mol/L solution of hydrochloric acid?
- What is the pH of a 0.001 mol/L solution of sodium hydroxide at 25 degrees C?
- Which expression gives for ?
- The equilibrium is exothermic in the forward direction. What happens when the temperature is raised?
- How many moles are in 11 g of carbon dioxide ( g/mol)?
- 4 g of sodium hydroxide ( g/mol) is dissolved to make 500 mL of solution. What is the concentration?