A mixture of 1.57 mol of N2, 1.92 mol of H2 and 8.13 mol of NH3 is introduced into a 20 L reaction vessel at 500 K. At this temperature, the equilibrium constant, Kc for the reaction

N2(g)+3H2(g) ⇌ 2NH3(g) is \( 1.7\times 10^{2}\)

Is the reaction mixture at equilibrium? If not, what is the direction of the net reaction?

Asked by Pragya Singh | 1 year ago |  80

1 Answer

Solution :-

The given reaction is:

N2(g)+3H2(g) ⇌ 2NH3(g)

The given concentration of various species is

\( [N_2]= \dfrac{1.57}{20}mol\, L^{-1} [H_2] \)

\( = \dfrac{1.92}{20}mol\, L^{-1}[NH_3]\)

\( = \dfrac{8.31}{20}mol\, L^{-1}\)

Now, reaction quotient Qc is:

\( Q=\dfrac{[NH_{3}]^{2}}{[N_{2}][H_{2}]^{3}}\\ \\ \)

\( =\dfrac{(\dfrac{(8.13)}{20})^{2}}{(\dfrac{1.57}{20})(\dfrac{1.92}{20})^{3}}\\ \\ \)

\( =2.4\times 10^{3}\)

Since, Qc ≠ Kc, the reaction mixture is not at equilibrium.

Again, Qc > Kc. Hence, the reaction will proceed in the reverse direction.

Answered by Abhisek | 1 year ago

Related Questions

The concentration of sulphide ion in 0.1M HCl solution saturated with hydrogen sulphide is 1.0 × 10–19 M. If 10 mL of this is added to 5 mL of 0.04M solution of the following: FeSO4, MnCl2, ZnCl2 and CdCl2 . in which of these solutions precipitation will take place?

Class 11 Chemistry Equilibrium View Answer

What is the minimum volume of water required to dissolve 1g of calcium sulphate at 298 K? (For calcium sulphate, Ksp is 9.1 × 10–6).

Class 11 Chemistry Equilibrium View Answer

What is the maximum concentration of equimolar solutions of ferrous sulphate and sodium sulphide so that when mixed in equal volumes, there is no precipitation of iron sulphide? (For iron sulphide, Ksp = 6.3 × 10–18).

Class 11 Chemistry Equilibrium View Answer

The ionization constant of benzoic acid is 6.46 × 10–5 and Ksp for silver benzoate is 2.5 × 10–13. How many times is silver benzoate more soluble in a buffer of pH 3.19 compared to its solubility in pure water?

Class 11 Chemistry Equilibrium View Answer

Equal volumes of 0.002 M solutions of sodium iodate and cupric chlorate are mixed together. Will it lead to precipitation of copper iodate? (For cupric iodate Ksp = 7.4 × 10–8 ).

Class 11 Chemistry Equilibrium View Answer