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# Calculating a $K_{eq}$

SATCHM-ZQEFPN

$$H_2(g) + I_2(g) \rightleftharpoons 2HI(g)$$

What is the $K_{eq}$ for the reaction shown above if $H_2= 1 \ atm, I_2= 2 \ atm$, and $HI = 3 \ atm$?

A

$0.33$

B

$3$

C

$0.22$

D

$0.67$

E

$4.5$