General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter18: Thermodynamics And Equilibrium
Section: Chapter Questions
Problem 18.109QP: Silver carbonate, Ag2CO3, is a light yellow compound that decomposes when heated to give silver...
Related questions
Question
How would you solve c?
Transcribed Image Text:Temperature (°C)
AN
A student conducts an experiment to determine the value of for the dissolution of Na₂C₂H₂O₂ (s). The student
dissolves 10.0 g of Na₂C₂H₂O₂ (s) in room-temperature water in a beaker and measures the temperature over
time. The data are given in the graph above.
24-
22-
20
18
16
14
12-
10
Time
(a) The student touches the side of the beaker after the dissolution has occurred and observes that it is cold.
What experimental evidence is consistent with the student's observation?
(b) Is the dissolution of endothermic or exothermic? Justify your answer in terms of the flow of energy between
the system and surroundings.
in kJ/mol.
(c) The student calculated the energy change for the dissolution to be 4600 J. Based on this value, calculate
AH soln
Expert Solution
Step 1
C) Given that, 10 g of Na2C2H3O2(s) dissolved in water at room temperature.
Also, given that the energy change of the dissolution is 4600 J.
We have to calculate the ∆Hosoln for that dissolution.
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