INTRO. TO CHEM LOOSELEAF W/ALEKS 18WKCR
5th Edition
ISBN: 9781264125609
Author: BAUER
Publisher: MCG
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Textbook Question
Chapter 1, Problem 20PP
Round each of the following numbers to two signi�cant �gures:
(a)1.502
(b) 13.50
(c) 0.001056
(d) 1200.0
(e) 0.2035
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Given the standard enthalpies of formation for the following substances, determine the
reaction enthalpy for the following reaction.
4A (g) + 2B (g) → 2C (g) + 7D (g)
AHrxn =?kJ
Substance
AH in kJ/mol
A (g)
- 20.42
B (g)
+ 32.18
C (g)
- 72.51
D (g)
- 17.87
Determine ASran for Zn(s) + 2HCl(aq) = ZnCl2(aq) + H2(aq) given the following
information:
Standard Entropy Values of Various Substance
Substance
So (J/mol • K)
60.9
Zn(s)
HCl(aq)
56.5
130.58
H2(g)
Zn2+(aq)
-106.5
55.10
CI
(aq)
Chapter 1 Solutions
INTRO. TO CHEM LOOSELEAF W/ALEKS 18WKCR
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