Problem: Consider the reaction {2A + B ⇄ C + D} with Kc1 = 7.4×10-3. Which of the following statements are correct?I Kc for the reaction {D + C ⇄ 2A + B} would equal -7.4×10-3II Kc for the reaction {4A + 2B ⇄ 2C + 2D} would equal 1.48×10-2III Kc for the reaction {2A + B ⇄ E + D}, in which a second reaction C ⇌ E (with Kc2 = 2) was added to the original reaction, would equal 1.48×10-2A. All statements are correctB. Only statements I and II are correctC. Only statements I and III are correctD. Only statement III is correctE. None of the statements is correct

FREE Expert Solution

For this problem, we are being asked to determine which statement is/are true

Analyzing each statement:

I Kc for the reaction {D + C  2A + B} would equal -7.4×10-3

  • Recall that in chemical equilibrium, the Kc of the reverse reaction is equal to the reciprocal of the Kc of the forward reaction
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Problem Details

Consider the reaction {2A + B ⇄ C + D} with Kc1 = 7.4×10-3. Which of the following statements are correct?

I Kc for the reaction {D + C ⇄ 2A + B} would equal -7.4×10-3

II Kc for the reaction {4A + 2B ⇄ 2C + 2D} would equal 1.48×10-2

III Kc for the reaction {2A + B ⇄ E + D}, in which a second reaction C ⇌ E (with Kc2 = 2) was added to the original reaction, would equal 1.48×10-2

A. All statements are correct

B. Only statements I and II are correct

C. Only statements I and III are correct

D. Only statement III is correct

E. None of the statements is correct