Q8 / 160 · AP EAMCET 2022 (08 Jul Shift 1) · Chemistry

Observe the following reaction $\mathrm{I}_2+10 \mathrm{HNO}_3 \rightarrow 2 \mathrm{HIO}_3+10 \mathrm{NO}_2+4 \mathrm{H}_2 \mathrm{O}$ The equivalent wt. of $\mathrm{HNO}_3$ is $\left(\right.$ molar mass of $\left.\mathrm{HNO}_3=\mathrm{M}\right)$

  • Correct answer
    A
    M
  • B
    $\frac{M}{4}$
  • C
    $\frac{M}{2}$
  • D
    $\frac{M}{5}$

Solution

$\mathrm{I}_2+10 \mathrm{HNO}_3 \rightarrow 2 \mathrm{HIO}_3+10 \mathrm{NO}_2+4 \mathrm{H}_2 \mathrm{O}$ Equivalent wt. $=\frac{\text { Molar mass }}{\text { no. of } \mathrm{H}^{+} \text {produced by acid }}=\frac{\mathrm{M}}{1}=\mathrm{M}$

Hence, the correct answer is option: 'A'.

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