For a given exothermic reaction, K_P and K'_P are the equilibrium constants at temperatures T_1 and T_2 , respectively. Assuming that the heat of reac - Chemistry MCQ Chemistry | ExamTest.live | ExamTest.live

Home Tests Search Rank Profile

easyMCQChemistryChemistry

1 mark

For a given exothermic reaction, K_{P} and K_{P}^{'} are the equilibrium constants at temperatures T_{1} and T_{2}, respectively. Assuming that the heat of reaction is constant in the temperature range between T_{1} and T_{2}, and T_{2} > T_{1}, it is observed that:

A $K_{P} > K_{P}^{'}$
B $K_{P} < K_{P}^{'}$
C $K_{P} = K_{P}^{'}$
D $K_{P} = \frac{1}{K _{P}^{'}}$

Solution & Step-by-step Explanation

For an exothermic reaction, the equilibrium constant decreases as the temperature increases (Le Chatelier's Principle).Since T_{2} > T_{1}, the equilibrium constant K_{P}^{'} at the higher temperature T_{2} will be smaller than K_{P} at the lower temperature T_{1} .Therefore, K_{P} > K_{P}^{'} .

Practice this question

Try it yourself before checking the explanation above.

For a given exothermic reaction, K_{P} and K_{P}^{'} are the equilibrium constants at temperatures T_{1} and T_{2}, respectively. Assuming that the heat of reaction is constant in the temperature range between T_{1} and T_{2}, and T_{2} > T_{1}, it is observed that:

A

K_{P} > K_{P}^{'}

B

K_{P} < K_{P}^{'}

C

K_{P} = K_{P}^{'}

D

K_{P} = \frac{1}{K _{P}^{'}}

Share This Question

Equilibrium Vant Hoff Equation

Related Questions

Which of the following statements are true?A. Unlike Ga that has a very high melting point, Cs has a very low melting point.B. On Pauling scale, the electronegativity values of N and Cl are not the same.C. Ar, K^+, Cl^-, Ca^2+ , and S^2- are all isoelectronic species.D. The correct order of the first ionization enthalpies of Na, Mg, Al, and Si is Si > Al > Mg > Na.E. The atomic radius of Cs is greater than that of Li and Rb.Choose the correct answer from the options given below:

Match List I with List IIList I (Ion)A. Co^2+ B. Mg^2+ C. Pb^2+ D. Al^3+ List II (Group Number in Cation Analysis)I. Group-III. Group-IIIIII. Group-IVIV. Group-VIChoose the correct answer from the options given below:

Predict the major product 'P' in the following sequence of reactions:

Which of the following are paramagnetic?A. [NiCl_4]^2- B. Ni(CO)_4 C. [Ni(CN)_4]^2- D. [Ni(H_2O)_6]^2+ E. Ni(PPh_3)_4 Choose the correct answer from the options given below:

Given below are two statements:Statement I: Like nitrogen that can form ammonia, arsenic can form arsine.Statement II: Antimony cannot form antimony pentoxide.In the light of the above statements, choose the most appropriate answer from the options given below:

Consider the following compounds: _2 , H_2_2 and H_2_4 . The oxidation states of the underlined elements in them are, respectively:

Ready for a Full Test?

Practice with timed mock tests and track your performance across Chemistry.

Browse Tests Leaderboard

Discussion