Some Basic Concepts of Chemistry - Result Question 48
####48. Concentrated aqueous sulphuric acid is $98 %$ $H_2 SO_4$ by mass and has a density of $1.80 g mL^{-1}$. Volume of acid required to make one litre of $0.1 M$ $H_2 SO_4$ solution is
[2007]
(a) $16.65 mL$
(b) $22.20 mL$
(c) $5.55 mL$
(d) $11.10 mL$
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Solution:
- (c) Molarity of $H_2 SO_4$ solution
$ =\frac{98 \times 1000}{98 \times 100} \times 1.80=18.0 $
Suppose $V mL$ of this $H_2 SO_4$ is used to prepare 1 lit. of $0.1 M H_2 SO_4$
$\therefore V \times 18.0=1000 \times 0.1$
or $V=\frac{1000 \times 0.1}{18.0}=5.55 mL$.
