Nitrogen monoxide, NO, reacts with bromine, Br2, to give nitrosyl bromide, NOBr. 2??(?) + ??2(?) ⇄ 2????(?) A sample of 0.425 mole NO with 0.626 mole Br2 in a 1.25 L reaction vessel gives an equilibrium mixture containing 0.113 mol NOBr. What is the composition of the equilibrium mixture in terms of Molarity?

Answered: A sample of 0.425 mole NO with 0.626…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Nitrogen monoxide, NO, reacts with bromine, Br₂, to give nitrosyl bromide, NOBr.

2??(?) + ??₂(?) ⇄ 2????(?)

A sample of 0.425 mole NO with 0.626 mole Br₂ in a 1.25 L reaction vessel gives an equilibrium mixture containing 0.113 mol NOBr. What is the composition of the equilibrium mixture in terms of Molarity?

Expert Solution

Step 1

Equilibrium is a condition at which the concentrations of different participating species becomes constant but both forward and backward reactions are proceeding at equal rates.

Step 2

The reaction involved is as shown below: 2NO + Br₂ ⇄ 2NOBr

Initial moles of NO = 0.425 mol/1.25 L

= 0.340 M

Initial moles of Br₂ = 0.626 mol/1.25 L

= 0.501 M

Assuming that 'x M' of the Br₂ reacts till equilibrium, so, the ICE table is as shown below:

Molar concentration	[NO]	[Br₂]	[NOBr]
Initial	0.340	0.501	-----
Change	- 2x	- x	+ 2x
Equilibrium	0.340 - 2x	0.501 - x	2x

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