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ki77a [65]
3 years ago
9

The system described by the reaction CO(g)+Cl2(g)⇌COCl2(g) is at equilibrium at a given temperature when PCO= 0.26 atm , PCl2= 0

.15 atm , and PCOCl2= 0.66 atm . An additional pressure of Cl2(g)= 0.39 atm is added. Find the pressure of CO when the system returns to equilibrium.
Chemistry
1 answer:
givi [52]3 years ago
4 0

<u>Answer:</u> The new pressure of CO is 0.09 atm

<u>Explanation:</u>

For the given chemical reaction:

CO(g)+Cl_2(g)\rightleftharpoons COCl_2(g)

The expression of K_p for above equation follows:

K_p=\frac{p_{COCl_2}}{p_{CO}\times p_{Cl_2}}             .......(1)

We are given:

p_{COCl_2}=0.66atm\\p_{CO}=0.26atm\\p_{Cl_2}=0.15atm

Putting values in above equation, we get:

K_p=\frac{0.66}{0.15\times 0.26}\\\\K_p=16.92

Addition pressure of chlorine added = 0.39 atm

Now, the equilibrium is re-established:

                    CO(g)+Cl_2(g)\rightleftharpoons COCl_2(g)

Initial:            0.26     0.15             0.66

At eqllm:     0.26-x   0.54            0.66+x

Putting values in expression 1, we get:

16.92=\frac{(0.66+x)}{(0.26-x)\times 0.54}\\\\x=0.17

So, new pressure of CO = 0.26 - x = (0.26 - 0.17) = 0.09 atm

Hence, the new pressure of CO is 0.09 atm

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