The equilibrium constant, \( K_c \), for the following reaction is \( 1.80 \times 10^{-4} \) at 298 K.\[\text{NH}_4\text{HS} (\text{s}) \rightleftharpoons \text{NH}_3 (\text{g}) + \text{H}_2\text{S} (\text{g})\]If an equilibrium mixture of the three compounds in a 4.73 L container at 298 K contains 2.68 mol of \(\text{NH}_4\text{HS} (\text{s})\) and 0.461 mol of \(\text{NH}_3\), the number of moles of \(\text{H}_2\text{S}\) present is \(\boxed{\phantom{00}}\) mol.

Answered: The equilibrium constant, Ke, for the…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

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The equilibrium constant, \( K_c \), for the following reaction is \( 1.80 \times 10^{-4} \) at 298 K.

\[
\text{NH}_4\text{HS} (\text{s}) \rightleftharpoons \text{NH}_3 (\text{g}) + \text{H}_2\text{S} (\text{g})
\]

If an equilibrium mixture of the three compounds in a 4.73 L container at 298 K contains 2.68 mol of \(\text{NH}_4\text{HS} (\text{s})\) and 0.461 mol of \(\text{NH}_3\), the number of moles of \(\text{H}_2\text{S}\) present is \(\boxed{\phantom{00}}\) mol.

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K_c is the ratio of product of concentration of products raised to their stoichiometric coefficient to the product of concentration of reactants raised to their stoichiometric coefficients.

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