Question

1)40% mixture of 0.2 mole of N2 and 0.6 mole of H2 react to give NH3 according to the equation :
N2(g) + 3H2(g) = 2NH3(g) at constant temperature and pressure. Then the ratio of the final volume to the initial
volume of gases is
(A) 4:5
(B) 5:4
(C) 7:10
(D) 8:5
2)For the reaction P(g) + 2Q(9) = R(g) at equilibrium it is found that the concentration of P and Q are 3 & 4 M
respectively. When volume is doubled and equilibrium is allowed to re-established then Q is 3M. Find the
equilibrium constant for the reaction R(g) = P(g) + 2Q(9).
(A) 10
(B) 12
(C) 14
(D) 16
​

Answer 1

1)40% mixture of 0.2 mole of N2 and 0.6 mole of H2 react to give NH3 according to the equation :

N2(g) + 3H2(g) = 2NH3(g) at constant temperature and pressure. Then the ratio of the final volume to the initial

volume of gases is

(A) 4:5