Some Basic Concepts of Chemistry - Result Question 8
####8. The volume strength of $1 M H _2 O _2$ is
(Molar mass of $H _2 O _2=34 g mol^{-1}$ )
(2019 Main, 12 Jan II)
(a) 16.8
(b) 22.4
(c) 11.35
(d) 5.6
Show Answer
Solution:
- Concentration of $H _2 O _2$ is expressed in terms of volume strength, i.e. “volume of $O _2$ liberated by $H _2 O _2$ at NTP”. Molarity is connected to volume strength as:
Molarity $(M)=\frac{x}{11.2}$ or $x=$ Molarity $\times 11.2$
where, $x=$ volume strength
So, for $1 M H _2 O _2, x=1 \times 11.2=11.2$
Among the given options, 11.35 is nearest to 11.2.
