Chemistry Practice Problems The Reaction Quotient Practice Problems Solution: At 2300 C, Kc for the reaction: N2(g) + O2(g) ⇌ 2N...

# Solution: At 2300 C, Kc for the reaction: N2(g) + O2(g) ⇌ 2NO(g) equals 1.7x10-3.Which of the following statements are correct?I Kp for this reaction also equals 1.7x10-3II When [N2] = 0.25 M, [O2] = 0.25 M, and [NO] = 0.042 M, the reaction will shift towards products as it approaches equilibriumIII Starting at equilibrium, doubling the volume of the system will not perturb the equilibrium position of the system.A. 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

###### Problem

At 2300 C, Kc for the reaction: N2(g) + O2(g) ⇌ 2NO(g) equals 1.7x10-3.

Which of the following statements are correct?

I Kp for this reaction also equals 1.7x10-3

II When [N2] = 0.25 M, [O2] = 0.25 M, and [NO] = 0.042 M, the reaction will shift towards products as it approaches equilibrium

III Starting at equilibrium, doubling the volume of the system will not perturb the equilibrium position of the system.

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

###### Solution

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

Analyzing each statement:

I Kp for this reaction also equals 1.7x10-3

• Recall that Kp can be calculated as:

$\overline{){{\mathbf{K}}}_{{\mathbf{p}}}{\mathbf{=}}{{\mathbf{K}}}_{{\mathbf{c}}}{\left(\mathbf{RT}\right)}^{\mathbf{∆}\mathbf{n}}}$

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