Nitrogen oxide racts with bromine to form nitrosyl bromide. A sample of 0.0655 mol NO with 0.0328 mol Br2 gives an equilibrium mixture containing 0.0389 mol NOBr. What is the composition of the equilibrum mixture?

2NO (g) + Br2 (g) / leftrightarrow 2NOBr (g)

Question

Chemistry

Iliana Zuniga

Today, 05:17

Nitrogen oxide racts with bromine to form nitrosyl bromide. A sample of 0.0655 mol NO with 0.0328 mol Br2 gives an equilibrium mixture containing 0.0389 mol NOBr. What is the composition of the equilibrum mixture?

2NO (g) + Br2 (g) / leftrightarrow 2NOBr (g)

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Answers (1)

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Octavio Hurst · Answer 1

NO = 0.0265 mol

Br₂ = 0.0133 mol

NOBr = 0.0389 mol

Explanation:

Let's consider the following reaction.

2 NO (g) + Br₂ (g) ⇄ 2 NOBr (g)

We can find the composition at equilibrium using an ICE chart. Let x be an unknow amount.

2 NO (g) + Br₂ (g) ⇄ 2 NOBr (g)

I 0.0655 0.0328 0

C - 2x - x + 2x

E 0.0655 - 2x 0.0328 - x 2x

At equilibrium, the mixture contains 0.0389 mol NOBr. Then,

0.0389 mol = 2x

x = 0.0195 mol

The composition of the equilibrium mixture is:

NO = 0.0655 - 2x = 0.0265 mol

Br₂ = 0.0328 - x = 0.0133 mol

NOBr = 0.0389 mol

Nitrogen oxide racts with bromine to form nitrosyl bromide. A sample of 0.0655 mol NO with 0.0328 mol Br2 gives an equilibrium mixture containing 0.0389 mol NOBr. What is the composition of the equilibrum mixture?2NO (g) + Br2 (g) / leftrightarrow 2NOBr (g)

Nitrogen oxide racts with bromine to form nitrosyl bromide. A sample of 0.0655 mol NO with 0.0328 mol Br2 gives an equilibrium mixture containing 0.0389 mol NOBr. What is the composition of the equilibrum mixture?

2NO (g) + Br2 (g) / leftrightarrow 2NOBr (g)