CHEMICAL PRINCIPLES PKG W/SAPLING
7th Edition
ISBN: 9781319086411
Author: ATKINS
Publisher: MAC HIGHER
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Question
Chapter 5, Problem 5.6E
(a)
Interpretation Introduction
Interpretation:
The changes in vapor pressure with increase in temperature have to be given.
(b)
Interpretation Introduction
Interpretation:
The change in vapor pressure with increase in surface area has to be given.
(c)
Interpretation Introduction
Interpretation:
The change in vapor pressure with increase in volume above the liquid has to be given.
(d)
Interpretation Introduction
Interpretation:
The change in vapor pressure with addition of air above the volume has to be given.
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The vapor pressure of ammonia at –50°C is 0.4034 atm;
at 0°C, it is 4.2380 atm.
(a) Calculate the molar enthalpy of vaporization (AHvap)
of ammonia.
(b) Calculate the normal boiling temperature of NH3(€).
12. Which substance would be expected to exhibit the greatest vapor pressure at 25°C?
(A) CH3OCH3
(В) С2H5ОН
(С) CН3CH2CH2ОН
(D) HOCH2CH2OH
13.
Ag"(aq) + 2 NH3(aq) Ag(NH3)2**(aq)
For this reaction, K = 1.7 x 107 at 25°C. What is the value of AG° in kJ?
(A) - 41.2
(В) — 17.9
(C) + 17.9
(D) + 41.2
14.
What is the sign of AG" and the value of K for an
electrochemical cell for which E -0.80 V?
AG
K
(A)
>1
(В)
+
>1
(C)
+
< I
(D)
< 1
15. The decomposition of ethane into two methyl radicals has a first order rate constant of
5.5 x 10-4 sec1 at 700°C. What is the half-life for this decomposition in minutes?
(A) 9.1
(B) 15
(C) 21
(D) 30
Silver ions are added to a solution with
[Br]= [CH]= [CO,²]=[AsO,'] = 0.1 M.
Which compound will precipitate at the lowest [Ag']?
16.
(A) AgBr
(K, = 5.0 × 10-")
(B) AgCl
(K„ – 1.8 x 10-")
(C) Ag,CO,
(K„ - 8.1 x 10-)
(D) Ag,AsO, (K„ = 1.0 × 10 ")
Consider the chemical equation and equilibrium constant for the formation of ammonia gas; N2(g) + 3 H2(g) ↔2 NH3(g), K = 3.7 x 108 at 25 °CDetermine the equilibrium constant at 25 °C for the reaction NH3(g) ↔ 0.5 N2(g) + 1.5 H2(g).
Chapter 5 Solutions
CHEMICAL PRINCIPLES PKG W/SAPLING
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