Again, consider the Haber process, At a temperature of 472 degrees Celsius, the

Question

Again, consider the Haber process, At a temperature of 472 degrees Celsius, the equilibrium constant, Kc, has been determined experimentally to have a value of 0.105. Another experiment is conducted where the initial concentration of the reactants and products are set as follows. [N2] = 0.100 M [H2] = 0.100 M [NH3] = 0.0500 M Based on the discussion in the text, which of the following statements is (are) TRUE concerning the reaction quotient, Q? Q = 25 The reaction is already at equilibrium. The concentration of products is too small and that of the reactants is too large. The reaction will proceed by forming more products; it moves from left to right. III only I,II and III II only I and III I only

Explanation / Answer

N2 (g)+ 3H2 (g) <------------------> 2 NH3 (g)

Under new concentrations reaction Quotient (K) is given as

Q = [NH3 ]2[N2] [H2]3

= (0.05)2(0.1)(0.1)3 = 25

Since Q>K the reaction has tendency to move backward rather than forward.

Hence option (E) (only I) is correct answer

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