Electrolysis of Aqueous Sodium Chloride

Q.

When the aqueous solution of $L{i}_{2}S{O}_4$ electrolyzed the products formed at cathode and anode respectively are

1. Li and $S_2{O}_8$

2. $H_2$ (gas) and $S_2{O}_8$

3. Li and $O_2$ (gas)

4. $H_2$ (gas) and $O_2$ (gas)

Q. Choose the correct option regarding the substances which are liberated at the cathode and anode during the electrolysis of aqueous NaCl.

1. Anode: $\text{Na (s)}$ and Cathode: ${\text{H}}_2\text{O (l)}$
2. Anode: ${\text{Cl}}_2\text{(g)}$ and Cathode: ${\text{H}}_2\text{(g)}$
3. Anode: $\text{Na (s)}$ and Cathode: ${\text{Cl}}_2\text{(g)}$
4. Anode: ${\text{H}}_2\text{(s)}$ and Cathode: $\text{Na (s)}$

Q.

What is the difference in the passage of electric current through an electrolyte and through a metal wire?

Q.

In an aqueous solution if $F^{-}$ ions are present then

1. oxidation of water occurs at the cathode

2. oxidation of water occurs at the anode

3. oxidation of water occurs at both cathode and anode

4. oxidation of water doesn't occur

Q.

During the electrolysis of water, large amount of hydronium ions are produced when water is acidified with

1. Dilute sulphuric acid

2. Dilute hydrochloric acid

3. Dilute nitric acid

4. Dilute acetic acid

Q. Choose the correct option regarding the substances which are liberated at the cathode and anode during the electrolysis of aqueous NaCl.

1. Anode: $\text{Na (s)}$ and Cathode: ${\text{H}}_2\text{O (l)}$
2. Anode: ${\text{H}}_2\text{(s)}$ and Cathode: $\text{Na (s)}$
3. Anode: ${\text{Cl}}_2\text{(g)}$ and Cathode: ${\text{H}}_2\text{(g)}$
4. Anode: $\text{Na (s)}$ and Cathode: ${\text{Cl}}_2\text{(g)}$

Q. Given are the reactions occuring during the electrolysis of sodium chloride solution:

$2C{l}^{-}\to C{l}_2+2e^{-}$
$2H_{2}O+2e^{-}\to H_2+2O{H}^{-}$

Which of the following is correct regarding liberation of electrolytic products?

1. Cathode : $Na$ and $H_2$
2. Cathode : $Na$ and $O_2$
3. Anode: $O_2$
4. Anode : $C{l}_2$

Q.

During the electrolysis of sodium chloride solution, how many electrons are lost by each chloride ion?

1. one electron

2. two electrons

3. three electrons

4. four electrons

Q. Aqueous solution of sodium chloride conducts electricity due to the presence of free _______.

1. electrons
2. molecules
3. atoms
4. ions

Q. The substance liberated at the cathode during the electrolysis of $NaCl$ solution is:

1. $Na\left(s\right)$
2. $H_{2}O\left(l\right)$
3. $C{l}_2\left(g\right)$
4. $H_2\left(g\right)$

Q.

When an aqueous solution of sodium sulphate is electrolysed, on cathode we get:

1. Na

2. H₂

3. SO₂

4. SO₃

Q.

During the electrolysis of sodium chloride solution, how many electrons are lost by each chloride ion?

1. 3
2. 4
3. 1
4. 2