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.
