For this question, is this an endothermic or exothermic reaction? I am confused at the part where work is negative and heat is positive, because I thought they were all either pos or neg. thank you.
For this question, is this an endothermic or exothermic reaction? I am confused at the part where work is negative and heat is positive, because I thought they were all either pos or neg. thank you.
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...
Related questions
Question
100%
For this question, is this an endothermic or exothermic reaction? I am confused at the part where work is negative and heat is positive, because I thought they were all either pos or neg. thank you.

Transcribed Image Text:Cnarge inheat
sotemexpands
aheatadded
3. A balloon is inflated to its full extent by(heating, The volume of the balloon changes from
4.0x106 liters to 4.5x10° liters by the addition of 1.3x10 Joules of energy as heat. Calculate
the change in internal energy, AE, for the process (assume the balloon expands at constant
pressure of 1.00 atm). {Hint: R = 0.08206 L·atm/mole-K = 8.3145 J/mole K}
gasconstant
Change inheak
gasconstant
%3D
%3D
for youles
AE = q + w = heat + work
Because heat is added, the internal energy of the system increases and q = +1.3x10 J
%3D
The system expands and does work on the surroundings, so work is a negative quantity
finas
w = -PAV = -(1.00 atm)(4.5x10ʻ L – 4.0x10° L)E-5.0x10° L·atm
initigl change in volume
%3D
We must convert this value to Joules before we can subtract it from 1.3x10% J
Dividing the two values of the Gas Constant R gives us:
work = (-P)(AV)
%3D
8.3145 J/mole K/0.08206 L'atm/mole K= 101.322 J/L'atm
w = (-5.0x10 L'atm)(101.322 J/L•atm) = -5.07x107 J
%3D
%3D
AE = 1.3x108 J – 5.07x107 J = 7.93x107 J
%3D
8.31453/mate V
b
= 101.323/om
O.08206L•am
/mble h
-5.0x10°-atm
101.322y
-5.07x10
%3D
1
Page 1 of 5
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 2 steps

Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you

Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning

Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education

Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning

Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning

Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education

Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning

Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education

Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning

Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY