Question

The enthalpies of two reactions are and both positive with $\Delta \mathrm { H } _ { 2 } > \Delta \mathrm { H } _ { 1 }$ . If the temperature of reacting system is increased from T1 to T2 predict which of the following alternative is correct?

• A. $\frac { \mathrm { k } _ { 1 } } { \mathrm { k } _ { 1 } } = \frac { \mathrm { k } _ { 2 } } { \mathrm { k } _ { 2 } }$
• B. $\frac { \mathrm { k } _ { 1 } } { \mathrm { k } _ { 1 } } > \frac { \mathrm { k } _ { 2 } } { \mathrm { k } _ { 2 } }$
• C. $\frac { \mathrm { k } _ { 1 } } { \mathrm { k } _ { 1 } } < \frac { \mathrm { k } _ { 2 } } { \mathrm { k } _ { 2 } }$
• D.

Answer 1

Answer: (D)

Answer 2

As the temperature of reacting system is increased the equilibrium constant of reaction is also increased for endothermic reactions so for two reactions on increasing the temperature by equal amounts .