Question

An aqueous solution of $98\%(w/w)H_{2}S{O}_4$ has density of $1.02g/cc$. The Molality of the solution is

• A. 1.1
• B. 0,7
• C. 2.1
• D. 1.5

Answer 1

Answer: (A)

$\because$ Volume $=\frac{\text{ Mass }(m)}{\text{ Density }(d)}$
$=\frac{100}{1.02}=98.039mL$
$\therefore$ Molarity $=\frac{9.8\times 1000}{98\times 98.04}=1.01$
Which is close to $1.1$.