Question

If $33\%$ of $HI$ decomposes at a particular temperature, $K_r$ for the given reaction $2HI\rightleftharpoons H_2+I_2$, will be?

• A. $\frac{1}{6}$
• B. $\frac{1}{4}$
• C. $\frac{1}{16}$
• D. $\frac{1}{8}$

Answer 1

The correct option is C $\frac{1}{16}$

$2HI⟶H_2+I_2$

$1-\frac{1}{3}⟶\frac{1}{6}\frac{1}{6}$

$K_C=\frac{\frac{1}{6}\times \frac{1}{6}}{{\left(\frac{2}{3}\right)}^2}=\frac{1}{16}$