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How long should water be electrolysed by passing 32 amperes current so that oxygen released can completely burm 27.66g of diborane.

Option: 1

3 hrs


Option: 2

6 hrs


Option: 3

5 hrs


Option: 4

10 hrs


Answers (1)

best_answer

\mathrm{B}_2 \mathrm{H}_6+3 \mathrm{O}_2 \rightarrow \mathrm{B}_2 \mathrm{O}_3+3 \mathrm{H}_2 \mathrm{O}

\text { Moles~of } \mathrm{O}_2 \text { required }=3 \times \text { Moles of } \mathrm{B}_2 \mathrm{H}_6

\quad 3 \times \frac{27.6}{27.6}=3

\mathrm{ \frac{I \times t}{96500}=\text { Moles of } \mathrm{O}_2 \times 4 }

\mathrm{ \frac{32 \times t}{96500}=3 \times 4 }

\mathrm{ t=\frac{3 \times 4 \times 96500 }{32} ~sec }

\mathrm{ t=10 \text { hrs. } }
 

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Divya Prakash Singh

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