Part A Calculate the standard enthalpy change for the reaction 2A +B= 20+ 2D where the heats of formation are given in the following table: Ar H" (kJ mol') Substance A -265 B -421 225 D -483 Express your answer in kJ mol- > View Available Hint(s) Templates Symbols undo regio feset keyboard shortcuts Help A:H° = kJ mol

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...
icon
Related questions
icon
Concept explainers
Question
Chemical energy is released or absorbed from reactions in various forms. The most easily
measurable form of energy comes in the form of heat, or enthalpy. The enthalpy of a reaction can
be calculated from the standard heats of formation of the substances involved in the reaction:
Part A
A,H° =E,A; H° (products) – ET,A,H° (reactants)
Here, n, represents the stoichiometric coefficients of the products,
stoichiometric coeffi cients of the reactants.
represents the
Calculate the standard enthalpy change for the reaction
2A +B= 20+ 2D
where the heats of formation are given in the following table:
The standard entropy change for the reaction, A,S°, is a measure of the change in how the
energy can be spread out during the course of the reaction. The standard Gibbs energy change
for the reaction can be estimated at any temperature using
Ar H"
(kJ mol
Substance
A,G = A;H° - TA,S°
A
-265
assuming ArH° and A,S° do not change with temperature.
B
-421
225
D
-483
Express your answer in kJ mol
> View Available Hint(s)
Temgiates Symbols undo regio Teset keyboard shortcuts help
AH" =
kJ mol
Submit
Transcribed Image Text:Chemical energy is released or absorbed from reactions in various forms. The most easily measurable form of energy comes in the form of heat, or enthalpy. The enthalpy of a reaction can be calculated from the standard heats of formation of the substances involved in the reaction: Part A A,H° =E,A; H° (products) – ET,A,H° (reactants) Here, n, represents the stoichiometric coefficients of the products, stoichiometric coeffi cients of the reactants. represents the Calculate the standard enthalpy change for the reaction 2A +B= 20+ 2D where the heats of formation are given in the following table: The standard entropy change for the reaction, A,S°, is a measure of the change in how the energy can be spread out during the course of the reaction. The standard Gibbs energy change for the reaction can be estimated at any temperature using Ar H" (kJ mol Substance A,G = A;H° - TA,S° A -265 assuming ArH° and A,S° do not change with temperature. B -421 225 D -483 Express your answer in kJ mol > View Available Hint(s) Temgiates Symbols undo regio Teset keyboard shortcuts help AH" = kJ mol Submit
What is the solubility of Caso,? (ie. what is the concentration of ions at equilibrium)
(You will need the standard change in Gibbs Energy, AG°, from part 1 on the previous slide)
A.
9.3 x 10- mol L-
В.
9.6 x 10-3 mol L-1
C.
4.8 x 10 mol L-1
D.
4.1 x 10-3 mol L-1
Transcribed Image Text:What is the solubility of Caso,? (ie. what is the concentration of ions at equilibrium) (You will need the standard change in Gibbs Energy, AG°, from part 1 on the previous slide) A. 9.3 x 10- mol L- В. 9.6 x 10-3 mol L-1 C. 4.8 x 10 mol L-1 D. 4.1 x 10-3 mol L-1
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Knowledge Booster
Thermochemistry
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.
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY