Question

13) Give the characteristic of a second order reaction having only one reactant A) The rate of the reaction is not proportional to the concentration of the reactant. B) The rate of the reaction is proportional to the natural logarithm of the concentration of the reactant C) The rate of the reaction is proportional to the square root of the concentration of the reactant D) The rate of the reaction is directly proportional to the concentration of the reactant. E) The rate of the reaction is proportional to the square of the concentration of the reactant. 147 14) The half-life for the second-order decomposition of HI is 15.4s when the initial concentration of HI is 0.67 M. What is the rate constant for this reaction? A) 2.2 x 10-2 M-1-1 B) 3.8 x 10-2 M-15-1 C) 4.5 x 10-2 M-15-1 D) 1.0 x 10-2 M-15-1 E) 9.7 x 10-2 M-1-1 15) Consider the following reaction: 15) CH4(8) + 2 H2S(g) - CS2(g) + 4 H2(e) A reaction mixture initially contains 0.50 M CH4 and 0.75 M H25. If the equilibrium concentration Hy is 0.44 M, find the equilibrium constant (K) for the reaction. A) 2.9 B) 0.34 C) 0.038 D) 0.23 E) 10.

Answer 1

(13) second order reenbion Reke equatis. Rate = k[A] Heub, corrent option in 1(E). The Rele do reentica i proportion to the the concentrata d the reendendo square ar (14) for and order reentica tip na Her ty 15.45: (A) = 0.62m K. (Aloky K(15.45) (0.67 m) TOISES MIS k = 0.0969 m. a 9.3x102am's Hens, corrent option in E) 9.7x102 tist Cty (9) + 2 H2S(3) CS2 (G) at 412 (9) Given 0.50 -* 0-9- un K= (es.] 0,34 (St] (1257% the H₂= 0.440 that calendricand brilihim 4 0.44 m a llxx.) 0.41 0.11 (0.5-1 (ox.mr (0.5-0.11) (0.28-0.22% 0.0326 Hend, current C) 0.038 mens k