Some Basic Concepts Of Chemistry Question 256

Question: 16.8 litre gas containing $ H _2 $ and $ O _2 $ is formed at NTP on electrolysis of water. What should be the weight of electrolysed water

Options:

A) 5 g

B) 9 g

C) 10 g

D) 12 g

Show Answer

Answer:

Correct Answer: B

Solution:

n $ =\frac{16.8}{22.4}=0.75 $ mole of $ H _2 $ and $ O _2 $

$ 2H _2O\to \underset{2:1}{\mathop{2H _2+O _2}}, $

2 mole $ H _2 $ ? 2 mole $ H _2O $

0.5 mole $ H _2 $ ­? 0.5 mole $ H _2O $ = 9gm.



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