The balanced chemical equation for the oxidation of chloride ions to chlorine gas at the anode is:
2Cl−→Cl2+2e−
This indicates that the formation of 1 mole of Cl2 gas requires the passage of 2 moles of electrons, which corresponds to a charge of 2 Faradays (2×96500 C).
For producing 0.10 mol of Cl2, the required charge (Q) is:
Q=0.10×2×96500 C=19300 C
We know that charge Q=I×t, where I is the current and t is the time in seconds.
Given current I=3 A,
t=IQ=319300 s=6433.33 s
To convert the time into minutes, we divide by 60:
t (in minutes)=606433.33≈107.22 minutes
Since 107.22 minutes is closest to 110 minutes among the given options, 110 minutes is the appropriate answer.