/*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} Q22P At 聽10掳C,Keqfor a reaction is ... [FREE SOLUTION] | 91影视

91影视

Log out

Learning Materials

Features

Discover

Chapter 1: Q22P (page 22)

At 10掳C,Keqfor a reaction is 100 . At 30掳C,Keq=10Does enthalpy increase or decrease during the reaction?

Short Answer

Expert verified

The enthalpy decreases during the reaction.

Step by step solution

01

Given data

Converting the temperature in Celsius to Kelvin,

T1= 100C= 273.15 + 10T1= 283.15K

Similarly,

T2= 300C= 273.15 + 30T2= 303.15K

02

Using the Van’t Hoff’s equation

lnK2K1= -鈭�H0R1T2-1T1

Where,

K2=Equilibrium constant at30掳C .

K1=Equilibrium constant at 10掳C.

R =Gas constant= 8.3145JK- 1mol- 1

T2= 303.15KT1= 283.15K

03

Calculating the enthalpy for the reaction

ln10100=-鈭�H08.3141303.15-1283.15- 2.3026 =-鈭�H08.3141303.15-1283.15-鈭�H0=- 2.3026脳8.3145- 0.00023鈭�H= - 83.23899kJ

Therefore, the value of enthalpy is鈭�H= - 83.23899kJ

Hence, the value of enthalpy is negative which indicates that the enthalpy decreases during the reaction.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

Summarize the relationship between energy (U), heat (q), and work (w).

Explain why complementarity would have been necessary for the development of self-replicating molecules

Explain how organisms avoid reaching equilibrium while maintaining a nonequilibrium steady state.

Why is evolutionary change constrained by its past but impossible to predict?

Discuss the differences between prokaryotes and eukaryotes
See all solutions

Recommended explanations on Biology Textbooks

Astrobiological Science

Read Explanation

Biological Processes

Read Explanation

Cell Communication

Read Explanation

Heredity

Read Explanation

Ecology

Read Explanation

Cell Cycle

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.