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Moderate

Data at Equilibrium

APCHEM-DEKUZX

$$ A(g) + B(g) \leftrightarrow 2C(g) \quad K = 10 \ \text{at} \ 20^\circ \text{C}$$

Trial [A] [B] [C]
1 1 M 1 M 2 M
2 1 M 0.1 M 1 M
3 0.1 M 1 M 1 M
4 2 M 0.2 M 4 M

$\ $

Assume all trials occurred at 25$^o$ Celsius.

Which of the following sets of data is at equilibrium?

A

Trial 1.

B

Trial 3.

C

Trials 2 and 3.

D

Trials 1 and 4.