OnlineCBT
Chemistry · EQUILIBRIUM
हिन्दीAt \( 700\text{ K} \), the equilibrium constant \( K_c \) for \( \text{H}_2(\text{g}) + \text{I}_2(\text{g}) \rightleftharpoons 2\text{HI}(\text{g}) \) is \( 57.0 \). At a given instant, the concentrations in a reaction vessel are \( [\text{H}_2] = 0.10\text{ M} \), \( [\text{I}_2] = 0.20\text{ M} \), and \( [\text{HI}] = 0.40\text{ M} \). What is the value of the reaction quotient \( Q_c \)?
Correct answer · Option 2
\( 8.0 \)
Explanation
\( Q_c = \frac{[\text{HI}]^2}{[\text{H}_2][\text{I}_2]} = \frac{(0.40)^2}{(0.10)(0.20)} = \frac{0.16}{0.02} = 8.0 \).
