Gases Chemistry Worksheet - Chapter 13, An Introduction To Chemistry Page 46
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Chapter 13
Gases
97.
Rutile ore is about 95% titanium(IV) oxide, TiO
, The TiO
is purified in the
O
19
bjeCtive
2
2
3
two reactions shown below. In the first reaction, what minimum volume in m
in 1.7 × 10
4
of Cl
at STP is necessary to convert all of the TiO
metric tons of
2
2
rutile ore to TiCl
?
4
900 °C
3TiO
+ 4C + 6Cl
3TiCl
+ 2CO + 2CO
2
2
4
2
1200-1400 °C
TiCl
+ O
TiO
+ 2Cl
4
2
2
2
98. Acetic acid, CH
CO
H, can be made from methanol and carbon dioxide in a
O
19
3
2
bjeCtive
reaction (shown below) that uses a rhodium/iodine catalyst. What is the percent
yield when 513 kg of liquid CH
CO
H form from the reaction of 309 kg
3
2
3
CO(g) at 1 atm and 175 °C?
CH
OH with 543 m
3
OH + CO → CH
CH
CO
H
3
3
2
Section 13.4 Dalton’s Law of Partial Pressures
99. Explain why the total pressure of a mixture of ideal gases is equal to the sum of
O
20
bjeCtive
the partial pressures of each gas.
100.
A typical 100-watt incandescent light bulb contains argon gas and nitrogen gas.
O
21
bjeCtive
O
22
a. If enough argon and nitrogen are added to this light bulb to yield a partial
bjeCtive
pressure of Ar of 98.5 kPa and a partial pressure of N
of 10.9 kPa, what is
2
the total gas pressure in the bulb?
-4
-4
b. If a 125-mL light bulb contains 5.99 × 10
and 5.39 × 10
moles of N
2
moles of Ar, what is the pressure in kPa in the bulb at a typical operating
temperature of 119 °C?
101. A typical fluorescent light bulb contains argon gas and mercury vapor.
O
21
bjeCtive
O
22
a. If the total gas pressure in a fluorescent light bulb is 307.1 Pa and the
bjeCtive
partial pressure of the argon gas is 306.0 Pa, what is the partial pressure of
the mercury vapor?
b. If a 935-mL fluorescent bulb contains 4108 mg of argon gas and 77 mg of
mercury vapor, what is the total gas pressure in the fluorescent bulb at
313 K?
102.
If a 135-mL luminous tube contains 1.2 mg Ne and 1.2 mg Ar, at what
temperature will the total gas pressure be 13 mmHg?
103. The atmosphere of Venus contains carbon dioxide and nitrogen gases. At the
planet’s surface, the temperature is about 730 K, the total atmospheric pressure
is 98 atm, and the partial pressure of carbon dioxide is 94 atm. If scientists
wanted to collect 10.0 moles of gas from the surface of Venus, what volume of
gas should they collect?
104.
Natural gas is a mixture of gaseous hydrocarbons and other gases in small
quantities. The percentage of each component varies depending on the source.
3
Consider a 21 m
storage container that holds 11.8 kg methane gas, CH
,
4
2.3 kg ethane gas, C
H
, 1.1 kg propane gas, C
H
, and an unknown amount
2
6
3
8
of other gases.
a. If the total pressure in the container is 1.00 atm at 21 °C, how many moles
of gases other than CH
, C
H
, and C
H
are in the container?
4
2
6
3
8
b. What percentage of the gas particles in the cylinder are methane molecules?
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