Electrolysis of molten/aq electrolytes

When molten NaCl is electrolysed, what will be produced at the cathode?

• molten sodium metal

• solid sodium metal

• gaseous sodium metal

• aqueous sodium metal

when molten NaCl is electrolysed, what product will be produced at the positive electrode?

when aqueous Na₂SO₄ is electrolysed, which ion will be discharged at the anode?

• Na⁺

• H⁺

• SO₄^2-

• OH^-

when aqueous sodium bromide is electrolysed, what products will be produced at the cathode and anode?

• cathode: H₂ gas

  anode: Br₂ gas

• cathode: Na solid

  anode: Br₂ gas

• cathode: H₂ gas

  anode: O₂ gas

• cathode: Na solid

  anode: O₂ gas

A student electrolysed molten MgO with carbon electrodes, and found that CO₂ was produced at the anode. Which reason best explains this?

• the student's very bad at what he does. fail him. ☹️

• the C electrodes undergone combustion with the O₂ produced at the anode.

• the CO₂ gas was produced from the student's exhaled breath.

• the carbon impurities present in the electrolyte undergone oxidation at the anode.

Could you understand electrolysis 🔋 today?

• YES YES YES YES

• no... i had no idea what was going on ... please help me after class :(

• of course im a smart student

• TOO EASY FOR ME TEACHER