C hemistry 3 60
Dr. Jean M. Standard
Problem Set 10 Solutions
1 . Sketch ( roughly t o s cale) a p hase d iagram f or m olecular o xygen g iven t he f ollowing
information: the triple point occurs at 54.3 K and 1.14 torr; the critical point occurs at
154.
C hemistry 3 60
Dr. Jean M. Standard
Problem Set 13 Solutions
1 . The reaction 2A P follows second-order kinetics.
The rate constant for the
reaction is k =3.50 1 04 L mol1s 1. Determine the time required for the concentration of A
to d rop f rom i ts i n
C hemistry 3 60
Dr. Jean M. Standard
Problem Set 12 Solutions
1 . The b romination o f a cetone i s a cid c atalyzed a ccording t o t he f ollowing s cheme,
CH 3COCH 3 + Br2
H+
CH 3COCH 2 Br + HBr .
The progress of the reaction can be monitored by measu
C hemistry 3 60
Dr. Jean M. Standard
Problem Set 11 Solutions
1 . The vapor pressure of pure toluene is 400 torr and that of pure 1,2-dimethylbenzene is
150 torr at 90C. Determine the composition of the liquid and vapor phases if toluene
and 1,2-dimethylb
C hemistry 3 60
Dr. Jean M. Standard
Problem Set 9 Solutions
1 . The f ollowing c hemical r eaction c onverts s ulfur d ioxide t o s ulfur t rioxide.
SO 2 ( g) +
1O
22
( g)
SO 3 ( ) .
(a.) Write the expression for K eq f or t his r eaction.
In terms of ac
C hemistry 3 60
Dr. Jean M. Standard
Problem Set 8 Solutions
1 . Consider the reaction between zinc metal and hydrochloric acid,
Zn (s) + 2 HCl ( aq)
H 2 ( g) + ZnCl2 ( aq) .
If the initial amounts present are 100.0 g Zn and 150.0 mL of 2.25 M HCl, determ
C hemistry 3 60
Dr. Jean M. Standard
Problem Set 7 Solutions
1 . Calculate the entropy change when neon at 25C and 1 atm is allowed to expand from
0.780 L t o 1 .250 L . T he s ystem i s s imultaneously h eated t o 8 5C. A ssume i deal
behavior.
For an id
C hemistry 3 60
Dr. Jean M. Standard
Problem Set 6 Solutions
1 . Three moles of an ideal gas expand isothermally and reversibly from 90 to 300 L at 300
K.
(a) Calculate U m , Sm , w per mole, and q per mole.
For an ideal gas, U = C v T , or in terms of mo
C hemistry 3 60
Dr. Jean M. Standard
Problem Set 5 Solutions
1 . Determine the amount of pressure-volume work performed by 1 mole of water freezing to
ice at 0 C and 1 atm pressure.
The density of liquid water at 0 C is 0.99984 g/mL and
the d ensity o f i
C hemistry 3 60
Dr. Jean M. Standard
Problem Set 4 Solutions
1 . Two moles of an ideal gas are compressed isothermally and reversibly at 298 K from
1 atm to 200 atm. Calculate q , w , U , and H .
For an isothermal reversible expansion of an ideal gas, the
C hemistry 3 60
Dr. Jean M. Standard
Problem Set 3 Solutions
1 . (a) One mole of an ideal gas at 298 K is expanded reversibly and isothermally from 1.0 L
to 10 L. Determine the amount of work in Joules.
We start with the basic definition of work,
w=
Pext
C hemistry 3 60
Dr. Jean M. Standard
Problem Set 2 Solutions
1 . The atmospheric surface pressure on Venus is 90 bar. The atmosphere near the surface is
composed of 96% carbon dioxide and 4% other gases. Given a surface temperature of 730
K, what is the m
C hemistry 3 60
Dr. Jean M. Standard
Problem Set 1 Solutions
1 . Determine t he f irst d erivatives o f e ach o f t he f ollowing f unctions o f o ne v ariable.
a . ) f ( x ) = 3 x 2e x
( i s a c onstant)
(
)
f + ( x ) = 6 x 3 x 2 e x
b . ) Y ( x ) = A co