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Ways of Representing the Concentration of a Solution

2SO3⇌ 2SO2+O2...

Question

$2 S O_{3} ⇌ 2 S O_{2} + O_{2}$ . If $K_{c} = 100, α = 1$ half of the reaction is completed, the concentration of $S O_{3}$ and $S O_{2}$ are equal, the concentration of $O_{2}$ is ?

A

0.001 M

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B

\frac{1}{2} S O_{2}

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C

2

times of

S O_{2}

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D

Data incomplete

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Solution

The correct option is A $0.001 M$
$K_{C} = \frac{[S O_{3}]^{2}}{[S O_{2}]^{2} [O_{2}]}$ Given $[S O_{3}] = [S O_{2}] = 1$
$\Rightarrow 100 = \frac{1}{1 [O_{2}]}$
$\Rightarrow [O_{2}] = \frac{1}{100} = 0.001 M$ .

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K_{c}

for the following equilibrium when the equilibrium concentration of each substance is:

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10 l i t

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Ways of Representing the Concentration of a Solution

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