How many of $0.1 \mathrm{~N} \mathrm{~HCl}$ are required to react completely with $1 \mathrm{~g}$ mixture of…

How many of $0.1 \mathrm{~N} \mathrm{~HCl}$ are required to react completely with $1 \mathrm{~g}$ mixture of $\mathrm{Na}_{2} \mathrm{CO}_{3}$ and $\mathrm{NaHCO}_{3}$ containing equimolar amounts of two?
  1. $157.7 \mathrm{~mL}$
  2. $15.77 \mathrm{~mL}$
  3. $147.7 \mathrm{~mL}$
  4. $14.77 \mathrm{~mL}$

Solution

$\mathrm{Na}_{2} \mathrm{CO}_{3}$ $\mathrm{NaHCO}_{3}$
$\quad$$\quad$$\mathrm{x}$ $\quad$$\quad$$(1-x)$
$\frac{x}{106}=\frac{1-x}{84}$ given (moles are equal )
$\mathrm{x}=0.557$
$\frac{0.557}{53}+\frac{0.443}{84}=\frac{\mathrm{V} \times 0.1}{1000}$
$\mathrm{V}=157.7 \mathrm{~mL}$

Asked in: JEE-TOPICTESTS-CHEMISTRY

Practice more SOME BASIC CONCEPTS OF CHEMISTRY questions on Aicharya