For the following reactions, occurring at 500 K, arrange them in order of increasing tendency to proceed to completion (least arrow greatest tendency) 1. 2NOClleftharpoons2NO+Cl2;Kp=1.7× 10- 2 2. 2SO3leftharpoons2SO2+O2;Kp=1.3× 10- 5 3. 2NO2leftharpoons2NO+O2;Kp=5.9× 10- 5

Question

For the following reactions, occurring at 500 K, arrange them in order of increasing tendency to proceed to completion (least arrow greatest tendency) 1. 2NOClleftharpoons2NO+Cl2;Kp=1.7× 10- 2 2. 2SO3leftharpoons2SO2+O2;Kp=1.3× 10- 5 3. 2NO2leftharpoons2NO+O2;Kp=5.9× 10- 5 (A) 2 < 1 < 3 (B) 1 < 2 < 3 (C) 2 < 3 < 1 (D) 3 < 2 < 1

Tardigrade Admin · Accepted Answer

The greater the magnitude of equilibrium constant, the more the tendency of the reaction to proceed to completion. Hence the correct order of increasing tendency to proceed to completion (least arrow greatest tendency) 2 < 3 < 1.

Q. For the following reactions, occurring at 500 K, arrange them in order of increasing tendency to proceed to completion (least → greatest tendency) 1. 2NOCl⇌2NO+Cl2​;Kp​=1.7×10−2 2. 2SO3​⇌2SO2​+O2​;Kp​=1.3×10−5 3. 2NO2​⇌2NO+O2​;Kp​=5.9×10−5

2 < 1 < 3

1 < 2 < 3

2 < 3 < 1

3 < 2 < 1

The greater the magnitude of equilibrium constant, the more the tendency of the reaction to proceed to completion. Hence the correct order of increasing tendency to proceed to completion (least → greatest tendency) 2 < 3 < 1.

The greater the magnitude of equilibrium constant, the more the tendency of the reaction to proceed to completion. Hence the correct order of increasing tendency to proceed to completion (least $\to$ greatest tendency) 2 < 3 < 1.