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Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097

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BuyFindarrow_forward

Chemistry

9th Edition
Steven S. Zumdahl
ISBN: 9781133611097
Textbook Problem

What is the difference between K and Kp? When doc K = Kp for a reaction? When does K Kp for a reaction? If the coefficients in a reaction equation are tripled. how is the new value of K related to the initial value of K? lf an equation for a reaction is reversed. how is the value of Kp for the reversed equation related to the value of Kp for the initial equation?

Interpretation Introduction

Interpretation: The difference between the terms ‘ K ’ and ‘ Kp ’ is to be stated. The condition when these are equal and when they are unequal is to be determined. The new value of K if the coefficients in a reaction are tripled and the new value of Kp if an equation is reversed is to be determined.

Concept introduction: When the equilibrium constant is expressed in terms of concentration, it is represented as K . When the equilibrium constant is expressed in terms of pressure, it is represented as Kp .

To determine: The difference between the terms ‘ K ’ and ‘ Kp ’; the condition when these are equal and when they are unequal and the new value of K if the coefficients in a reaction are tripled and the new value of Kp if an equation is reversed.

Explanation

To determine: The difference between the terms ‘ K ’ and ‘ Kp ’.

When the equilibrium constant is expressed in terms of concentration, it is represented as K .

When the equilibrium constant is expressed in terms of pressure, it is represented as Kp .

The relation between ‘ K ’ and ‘ Kp ’ is,

Kp=K(RT)Δn

Where,

  • R is the gas constant.
  • T is the temperature.
  • Δn is the change in the number of moles.

To determine: The condition when ‘ K ’ and ‘ Kp ’ are equal and when they are unequal.

The relation between ‘ K ’ and ‘ Kp ’ is,

Kp=K(RT)Δn

Where,

  • R is the gas constant.
  • T is the temperature.
  • Δn is the change in the number of moles.

When the number of moles of the products formed is equal to the number of moles of the reactants involve, ‘ K ’ and ‘ Kp ’ are equal to each other and when the number of moles are unequal, these values are different from each other.

To determine: The new value of K if the coefficients in a reaction are tripled

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