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torisob [31]
3 years ago
9

Lone should know the properbres

Chemistry
1 answer:
Kaylis [27]3 years ago
3 0

Answer:

Explanation:

i dont kno

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At 1000 K, a sample of pure NO2 gas decomposes. 2 NO2(g) equilibrium reaction arrow 2 NO(g) + O2(g) The equilibrium constant KP
kirill115 [55]

<u>Answer:</u> The pressure of NO and NO_2 in the mixture is 0.58 atm and 0.024 atm respectively.

<u>Explanation:</u>

We are given:

Equilibrium partial pressure of O_2 = 0.29 atm

For the given chemical equation:

                   2NO_2(g)\rightleftharpoons 2NO(g)+O_2(g)

Initial:              a

At eqllm:        a-2x          2x          x

Calculating for the value of 'x'

\Rightarrow x=0.29

Equilibrium partial pressure of NO = 2x = 2(0.29) = 0.58 atm

Equilibrium partial pressure of NO_2 = a - 2x = a - 2(0.29) = a - 0.58

The expression of K_p for above equation follows:

K_p=\frac{p_{O_2}\times (p_{NO})^2}{(p_{NO_2})^2}

We are given:

K_p=158

Putting values in above expression, we get:

158=\frac{0.29\times (0.58)^2}{(a-0.58)^2}\\\\a=0.555,0.604

Neglecting the value of a = 0.555 because it cannot be less than the equilibrium concentration.

So, a=0.604

Equilibrium partial pressure of NO_2 = (a - 0.58) = (0.604 - 0.58) = 0.024 atm

Hence, the pressure of NO and NO_2 in the mixture is 0.58 atm and 0.024 atm respectively.

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