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How long (approximate) should water be electrolysed by passing through 100 amperes current so that the oxygen released can completely burn 27.66 g of diborane ? (Atomic weight of B = 10.8 u)

1. 6.4 hours
2. 0.8 hours
3. 3.2 hours
4. 1.6 hours

Correct answer: 3.2 hours

Solution

The correct option is 3.2 hours because the amount of oxygen required to completely burn 27.66 g of diborane can be calculated using stoichiometry, and the electrolysis process at 100 amperes produces the necessary oxygen in that time frame.

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