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3 years ago

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To a 2.00-L flask, 2.00 mol each of H2and I2is added. The Kcfor this reaction is 55.3. Determine the equilibrium concentrations

of all chemical species at room temperature.

1 answer:

Alecsey [184]3 years ago

5 0

Answer:

hi hi hi hi hi hi hibbdnnd

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1.72 moles of NOCI were placed in a 2.50 L reaction chamber

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The equilibrium constant, Kc=0.026

<h3>Further explanation</h3>

Given

1.72 moles of NOCI

1.16 moles of NOCI remained

2.50 L reaction chamber

Reaction

2NOCI(g) = 2NO(g) + Cl2(g).

Required

the equilibrium constant, Kc

Solution

ICE method

2NOCI(g) = 2NO(g) + Cl2(g).

I 1.72

C 0.56 0.56 0.28

E 1.16 0.56 0.28

Molarity at equilibrium :

NOCl :

$\tt \dfrac{1.16}{2.5}=0.464$

NO :

$\tt \dfrac{0.56}{2.5}=0.224$

Cl2 :

$\tt \dfrac{0.28}{2.5}=0.112$

$\tt Kc=\dfrac{[NO]^2[Cl_2]}{[NOCl]^2}\\\\Kc=\dfrac{0.224^2\times 0.112}{0.464^2}=0.026$

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