Tamil Nadu Board of Secondary EducationHSC Science Class 12th

# During electrolysis of molten sodium chloride, the time required to produce 0.1 mole of chlorine gas using a current of 3A is ___________. - Chemistry

MCQ
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During electrolysis of molten sodium chloride, the time required to produce 0.1 mole of chlorine gas using a current of 3A is ___________.

#### Options

• 55 minutes

• 107.2 minutes

• 220 minutes

• 330 minutes

#### Solution

During electrolysis of molten sodium chloride, the time required to produce 0.1 mole of chlorine gas using a current of 3A is 107.2 minutes.

Explanation:

m = ZIt ...(mass of 1 mole of Cl gas = 71)

t = "m"/"ZI" ....(∴ mass of 0.1 mole of Cl2 gas = 7.1 g mol−1)

= (7.1)/(71/(2 xx 96500) xx 3) $\ce{(2Cl^- -> Cl2 + 2e^-)}$

= (2 xx 96500 xx 7.1)/(71 xx 3)

= 6433.33 sec

= 107.2 min

Concept: Thermodynamics of Cell Reactions
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