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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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Chapter
Section
BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

A 0.64 g sample of the white crystalline dimer (4) is dissolved in 25.0 mL of benzene at 20 °C. Use the equilibrium constant to calculate the concentrations of monomer (2) and dimer (4) in this solution.

Interpretation Introduction

Interpretation: Concentration of monomer and dimer at equilibrium has to be identified.

Concept Introduction: At equilibrium the concentration of the reaction and the product is equated to a constant K, where K is known as the equilibrium

If a reaction is as aA+bBcC+dD ,

The equilibrium constant K=[C]c[D]d[A]a[B]b

Molarity: The concentration for solutions is expressed in terms of molarity as follows,

Molarity = No. of moles of soluteVolume of solution in L

Explanation

Using the equation given below,

Molarity = No. of moles of soluteVolume of solution in L

No:ofmoles=Mass×1molMolarmass

On calculating the concentration,

[dimer]0=((0.64)(1mol/486

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