For the reaction N_2(g) + O_2(g) leftharpoons 2NO(g) , the equilibrium constant is K_1 . The equilibrium constant is K_2 for the reaction 2NO(g) + O_2 - Chemistry MCQ Chemistry | ExamTest.live | ExamTest.live

Home Tests Search Rank Profile

mediumMCQChemistryChemistry

4 attempts0% success rate1 mark

For the reaction N_{2} (g) + O_{2} (g) ⇌ 2 NO (g), the equilibrium constant is K_{1} . The equilibrium constant is K_{2} for the reaction 2 NO (g) + O_{2} (g) ⇌ 2 NO_{2} (g) . What is K for the reaction NO_{2} (g) ⇌ \frac{1}{2} N_{2} (g) + O_{2} (g) ?

A $(K_{1} K_{2})^{- 1}$
B $(2 K_{1} K_{2})^{- 1}$
C $(4 K_{1} K_{2})^{- 1}$
D $(K_{1} K_{2})^{- 1/2}$

Solution & Step-by-step Explanation

Adding the first two reactions: N_{2} + O_{2} ⇌ 2 NO (K_{1}) 2 NO + O_{2} ⇌ 2 NO_{2} (K_{2})Net Reaction: N_{2} + 2 O_{2} ⇌ 2 NO_{2} (K_{n e t} = K_{1} \times K_{2})The target reaction is NO_{2} ⇌ \frac{1}{2} N_{2} + O_{2} .This is the reverse of the net reaction divided by 2. K = (\frac{1}{K _{n e t}})^{1/2} = (K_{1} K_{2})^{- 1/2}

Practice this question

Try it yourself before checking the explanation above.

For the reaction N_{2} (g) + O_{2} (g) ⇌ 2 NO (g), the equilibrium constant is K_{1} . The equilibrium constant is K_{2} for the reaction 2 NO (g) + O_{2} (g) ⇌ 2 NO_{2} (g) . What is K for the reaction NO_{2} (g) ⇌ \frac{1}{2} N_{2} (g) + O_{2} (g) ?

A

(K_{1} K_{2})^{- 1}

B

(2 K_{1} K_{2})^{- 1}

C

(4 K_{1} K_{2})^{- 1}

D

(K_{1} K_{2})^{- 1/2}

Share This Question

Equilibrium Chemical Equilibrium

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:

Which among the following electronic configurations belong to main group elements? A. [Ne] 3s^1 B. [Ar] 3d^3 4s^2 C. [Kr] 4d^10 5s^2 5p^5 D. [Ar] 3d^10 4s^1 E. [Rn] 5f^0 6d^2 7s^2

Ready for a Full Test?

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

Browse Tests Leaderboard

Discussion