Bundle: Chemistry: An Atoms First Approach, 2nd, Loose-Leaf + OWLv2, 4 terms (24 months) Printed Access Card
2nd Edition
ISBN: 9781305717633
Author: Steven S. Zumdahl, Susan A. Zumdahl
Publisher: Cengage Learning
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Question
Chapter 1, Problem 37E
Interpretation Introduction
Interpretation: Mass of proton, mass of electron, the size of nucleus and the size of an atom is given. The density of a hydrogen nucleus and a hydrogen atom are to be calculated.
Concept introduction: Density of an atom is the ratio of the mass of the atom to the volume of the atom.
To determine: The density of a hydrogen nucleus and a hydrogen atom.
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Q2. Consider the hydrogenation of ethylene
C2H4 + H2 = C2H6
The heats of combustion and molar entropies for the three gases at 298 K are given by:
C2H4
C2H6
H2
AH comb/kJ mol¹
-1395
-1550
-243
Sº / J K¹ mol-1
220.7
230.4
131.1
The average heat capacity change, ACP, for the reaction over the temperature range 298-1000 K is
10.9 J K¹ mol¹. Using these data, determine:
(a) the standard enthalpy change at 800 K
(b) the standard entropy change at 800 K
(c) the equilibrium constant at 800 K.
Chapter 1 Solutions
Bundle: Chemistry: An Atoms First Approach, 2nd, Loose-Leaf + OWLv2, 4 terms (24 months) Printed Access Card
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