Hydrogen And Its Compounds Question 218
Question: There are three samples of $ H_2O_2 $ labelled as 10 vol; 15 vol; 20 vol; Half litre of each sample is mixed and then diluted with equal volume of water. Calculate volume strength of the resultant solution.
Options:
A) 1.339
B) 7.5
C) 5.0
D) 2.68
Show Answer
Answer:
Correct Answer: B
Solution:
[b] We know, $ V=5.6\times N $
$ N_1=\frac{10}{5.6};N_2=\frac{15}{5.6};N_3=\frac{20}{5.6} $
$ N_1V_1+N_2V_2+N_3V_3=N _{R}V _{R} $
$ \frac{10}{5.6}\times \frac{1}{2}+\frac{15}{5.6}\times \frac{1}{2}+\frac{20}{5.6}\times \frac{1}{2}=N _{R}\times 3 $ Or $ N _{R}=1.339 $ Or $ V=N _{R}\times 5.6=1.339\times 5.6=7.5 $
BETA
