Medium
Write the uses of equilibrium constant.
(N/A) The equilibrium constant $(K_c)$ is used for the following purposes:
$1$. Predicting the direction of the reaction: By calculating the reaction quotient $(Q_c)$,we can compare it with $K_c$. If $Q_c < K_c$,the reaction proceeds in the forward direction. If $Q_c > K_c$,the reaction proceeds in the reverse direction. If $Q_c = K_c$,the reaction is at equilibrium.
$2$. Calculating equilibrium concentrations: If the equilibrium constant and the initial concentrations of the reactants are known,the concentrations of all species at equilibrium can be calculated using the equilibrium expression.
$1$. Predicting the direction of the reaction: By calculating the reaction quotient $(Q_c)$,we can compare it with $K_c$. If $Q_c < K_c$,the reaction proceeds in the forward direction. If $Q_c > K_c$,the reaction proceeds in the reverse direction. If $Q_c = K_c$,the reaction is at equilibrium.
$2$. Calculating equilibrium concentrations: If the equilibrium constant and the initial concentrations of the reactants are known,the concentrations of all species at equilibrium can be calculated using the equilibrium expression.
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Similar Questions
Write the equilibrium constant (equilibrium law) for the following reactions:
$(i)$ $4NH_{3(g)} + 5O_{2(g)} \rightleftharpoons 4NO_{(g)} + 6H_{2}O_{(g)}$
$(ii)$ $H_{2(g)} + I_{2(g)} \rightleftharpoons 2HI_{(g)}$
$(iii)$ $N_{2(g)} + 3H_{2(g)} \rightleftharpoons 2NH_{3(g)}$
$(i)$ $4NH_{3(g)} + 5O_{2(g)} \rightleftharpoons 4NO_{(g)} + 6H_{2}O_{(g)}$
$(ii)$ $H_{2(g)} + I_{2(g)} \rightleftharpoons 2HI_{(g)}$
$(iii)$ $N_{2(g)} + 3H_{2(g)} \rightleftharpoons 2NH_{3(g)}$
Medium
View SolutionThe following equilibrium constants are given: $N_2 + 3 H_2 \rightleftharpoons 2 NH_3$ $(k_1)$,$N_2 + O_2 \rightleftharpoons 2 NO$ $(k_2)$,$H_2 + 1/2 O_2 \rightleftharpoons H_2 O$ $(k_3)$. The equilibrium constant for the oxidation of $1 \text{ mole } NH_3$ by oxygen to give $NO$ according to the reaction $NH_3 + 5/4 O_2 \rightleftharpoons NO + 3/2 H_2 O$ is:
Difficult
View SolutionFor the reaction $A + 2B \rightleftharpoons C$,the expression for the equilibrium constant is.........
Medium
View SolutionThe equilibrium constants for the reactions $(i)$,$(ii)$,and $(iii)$ are $K_1$,$K_2$,and $K_3$ respectively. Which of the following is the correct relationship?
$(i)$ $N_2 + 2O_2 \rightleftharpoons 2NO_2$
$(ii)$ $2NO_2 \rightleftharpoons N_2 + 2O_2$
$(iii)$ $NO_2 \rightleftharpoons 1/2 N_2 + O_2$
$(i)$ $N_2 + 2O_2 \rightleftharpoons 2NO_2$
$(ii)$ $2NO_2 \rightleftharpoons N_2 + 2O_2$
$(iii)$ $NO_2 \rightleftharpoons 1/2 N_2 + O_2$
Medium
View SolutionAn equilibrium mixture of the reaction $2H_2S_{(g)} \rightleftharpoons 2H_{2(g)} + S_{2(g)}$ had $0.5 mol$ $H_2S$,$0.10 mol$ $H_2$,and $0.4 mol$ $S_2$ in a $1 L$ vessel. The value of the equilibrium constant $(K_c)$ in $mol L^{-1}$ is:
MediumIIT 1992
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