An equilibrium mixture for the reaction, 2 H2 S( g) ⇌2 H2( g)+S2( g) had 1 mole of H2 S, 0.2 m

step 1 An equilibrium mixture for the reaction 2 moles of H2S gas reacts reversibly to give 2 moles of

An equilibrium mixture for the reaction, 2 H2 S( g) ⇌2...

An equilibrium mixture for the reaction, $2 \mathrm{H}_2 \mathrm{~S}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{H}_2(\mathrm{~g})+\mathrm{S}_2(\mathrm{~g})$ had 1 mole of $\mathrm{H}_2 \mathrm{~S}, 0.2$ mole of $\mathrm{H}_2$ and 0.8 mole of $\mathrm{S}_2$ in a 2 litre flask. The value of $\mathrm{K}_{\mathrm{c}}$ in $\mathrm{mol} \mathrm{L}^{-1}$ is (a) 0.08 (b) 0.016 (c) 0.004 (d) 0.160

An equilibrium mixture for the reaction, $2 \mathrm{H}_2 \mathrm{~S}(\mathrm{~g}) \rightleftharpoons 2 \mathrm{H}_2(\mathrm{~g})+\mathrm{S}_2(\mathrm{~g})$
had 1 mole of $\mathrm{H}_2 \mathrm{~S}, 0.2$ mole of $\mathrm{H}_2$ and 0.8 mole of $\mathrm{S}_2$ in a 2 litre flask. The value of $\mathrm{K}_{\mathrm{c}}$ in $\mathrm{mol} \mathrm{L}^{-1}$ is
(a) 0.08
(b) 0.016
(c) 0.004
(d) 0.160

Key Concepts

Chemical Equilibrium

Chemical equilibrium refers to the state in a reversible reaction where the forward and reverse reaction rates are equal, resulting in constant concentrations of reactants and products over time. This concept is central to understanding how reactions settle into a balanced state rather than proceeding to completion.

Equilibrium Constant (Kc)

The equilibrium constant, denoted as Kc for reactions in solution or gases under constant volume and temperature, quantifies the ratio of the concentrations of products to reactants at equilibrium, with each concentration raised to the power corresponding to its stoichiometric coefficient. It provides a measure of the extent to which a reaction favors the formation of products versus reactants.

Reaction Stoichiometry

Reaction stoichiometry involves the quantitative relationship between reactants and products as dictated by the balanced chemical equation. It is crucial in calculating the changes in concentration of the substances involved in a reaction, allowing for accurate determination of equilibrium conditions.

Concentration Calculation

Calculating concentration involves determining the molarity of each species by dividing the number of moles present by the volume of the container. This step is essential when applying the equilibrium constant expression to assess the ratio of product and reactant concentrations at equilibrium.

Transcript

Please give Ace some feedback