Multiple Choice
Which statement is true regarding the reversible reaction below? H2CO3+ F- ![Which statement is true regarding the reversible reaction below? H<sub>2</sub>CO<sub>3</sub>+ F<sup>-</sup> HCO<sub>3</sub>+ HF.K<sub>a</sub>1(H<sub>2</sub>CO<sub>3</sub>) = 4.2 × 10<sup>-</sup><sup>7</sup>; K<sub>a</sub>(HF) = 7.1 × 10<sup>-</sup><sup>4</sup> A) At equilibrium,[HF] > [H<sub>2</sub>CO<sub>3</sub>] because HF is a stronger acid than H<sub>2</sub>CO<sub>3</sub>. B) At equilibrium,[HF] > [H<sub>2</sub>CO<sub>3</sub>] because H<sub>2</sub>CO<sub>3</sub> is a stronger acid than HF. C) At equilibrium,[HF] = [H<sub>2</sub>CO<sub>3</sub>]. D) At equilibrium,[H<sub>2</sub>CO<sub>3</sub>] > [HF] because HF is a stronger acid than H<sub>2</sub>CO<sub>3</sub>. E) At equilibrium,[H<sub>2</sub>CO<sub>3</sub>] > [HF] because H<sub>2</sub>CO<sub>3</sub> is a stronger acid than HF.](https://d2lvgg3v3hfg70.cloudfront.net/TB6485/11eab46b_9ca1_53c1_a889_3b3343d2308f_TB6485_11.jpg)
HCO3+ HF.Ka1(H2CO3) = 4.2 × 10-7; Ka(HF) = 7.1 × 10-4
A) At equilibrium,[HF] > [H2CO3] because HF is a stronger acid than H2CO3.
B) At equilibrium,[HF] > [H2CO3] because H2CO3 is a stronger acid than HF.
C) At equilibrium,[HF] = [H2CO3].
D) At equilibrium,[H2CO3] > [HF] because HF is a stronger acid than H2CO3.
E) At equilibrium,[H2CO3] > [HF] because H2CO3 is a stronger acid than HF.
Correct Answer:
Verified
Correct Answer:
Verified
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