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Chemistry
UTME / JAMB 2022
Gas Laws & Kinetic Theory
Solution
If the volume of a given mass of a gas at 0ºc is 29.5cm\(^3\). What will be the volume of the gas at 15ºc, given that the pressure remains constant.
A
31.6
B
62.2
C
32.7
D
31.1
medium Difficulty
Study Explanation
Chemistry
WAEC / WASSCE 2022
Gas Laws & Kinetic Theory
Solution
What is the partial pressure of oxygen at s.t.p. in a gaseous mixture containing 100 cm3 of oxygen and 900 cm3 of nitrogen gas?
A
1.0 atm
B
0.1 atm
C
9.0 atm
D
0.9 atm
medium Difficulty
Study Explanation
Chemistry
UTME / JAMB 2019
Gas Laws & Kinetic Theory
Solution
The velocity, V of a gas is related to its mass, M by (k = proportionality constant)
A
V = \(\frac{k}{M}\)
B
V = \(\frac{k}{M^{\frac{1}{2}}}\)
C
V = \(kM^2\)
D
V = \((\frac{k}{M})^{\frac{1}{2}}\)
medium Difficulty
Study Explanation
Chemistry
UTME / JAMB 2018
Gas Laws & Kinetic Theory
Solution
A given amount of gas occupies 10.0dm\(^3\) at 4 atm and 273°C. The number of moles of the gas present is?
[Molar volume of gas at s.t.p = 22.4 dm\(^3\)]
A
0.89 mol
B
1.90 mol
C
3.80 mol
D
5.70 mol
medium Difficulty
Study Explanation
Chemistry
WAEC / WASSCE 2015
Gas Laws & Kinetic Theory
Solution
Which of the following statements about intermolecular distances and cohesive forces between gas is correct? They are
A
Both large
B
Both negligible
C
Constant and negligible
D
Large and negligible
medium Difficulty
Study Explanation
Chemistry
WAEC / WASSCE 2015
Gas Laws & Kinetic Theory
Diagram
The following diagram illustrates the rate curve that was obtained when Mg reacted with excess dilute HCl.
The diagram became horizontal at X because
A
The reaction was slowed down
B
All the dilute HCl has reacted
C
All the Mg has reacted
D
Hydrogen gas is produced at a steady rate
medium Difficulty
Study Explanation
Chemistry
UTME / JAMB 2012
Gas Laws & Kinetic Theory
Solution
50 cm\(_3\) of gas was collected over water at 10ºC and 765 mm Hg. Calculate the volume of the gas at s.t.p. if the saturated vapour pressure of water at 10ºC is 5mm Hg
A
49.19 cm 3
B
48.87 cm 3
C
48.55 cm 3
D
48.23 cm 3
medium Difficulty
Study Explanation
Chemistry
UTME / JAMB 2010
Gas Laws & Kinetic Theory
Solution
The volume of a given gas is V cm\(^3\) at a pressure P mm Hg. what is the new volume of the gas if the pressure is reduced to half at constant temperature?
A
4 V cm3
B
2 V cm3
C
V/2 cm3
D
V cm3
medium Difficulty
Study Explanation
Chemistry
UTME / JAMB 2009
Gas Laws & Kinetic Theory
Solution
A gas exerts pressure on its container because?
A
the molecules of a gas collide with the walls of the container
B
some of the molecules are moving faster than others
C
of the collisions of the molecules with each other
D
of the mass of the molecules of the gas
medium Difficulty
Study Explanation
Chemistry
UTME / JAMB 2009
Gas Laws & Kinetic Theory
Solution
The basic assumption in the kinetic theory of gases that the collisions of the gaseous molecules are perfectly elastic implies that the?
A
forces of attraction and repulsion are in equilibrium
B
gaseous molecules can occupy any available space
C
gaseous molecules will continue their motion indefinitely
D
gases can be compressed
medium Difficulty
Study Explanation
Chemistry
UTME / JAMB 2001
Gas Laws & Kinetic Theory
Solution
An oxide XO\(_2\) has a vapour density of 32. What is the atomic mass of X?
A
32
B
20
C
14
D
12
medium Difficulty
Study Explanation
Chemistry
WAEC / WASSCE 1997
Gas Laws & Kinetic Theory
Solution
Boyle's law can be expressed mathematically as
A
V \(\alpha\) T (P constant)
B
P \(\alpha\) V (T constant)
C
P \(\alpha\) T
D
V \(\alpha\) 1 / p(T constant)
E
V1/T1 = / T2
medium Difficulty
Study Explanation
Chemistry
WAEC / WASSCE 1992
Gas Laws & Kinetic Theory
Solution
If the volume of a given mass of gas at 298 K and pressure of 205.2 x 10\(^3\) Nm\(^{-2}\) is 2.12dm\(^3\), what is volume of the gas at s.t.p? (Standard pressure = 101.3 x 10\(^3\) Nm\(^{-2}\), Standard temperature = 273K)
A
39.3dm 3
B
22.4dm3
C
4.93dm3
D
3.93dm3
E
0.393dm3
medium Difficulty
Study Explanation
Chemistry
UTME / JAMB 1981
Gas Laws & Kinetic Theory
Solution
When air is compressed?
A
its density decreases
B
it solidifies
C
its temperature decreases
D
its temperature increases
E
its temperature remains unchanged
medium Difficulty
Study Explanation