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WorksheetsPRAPSPM CHAP 5
Total questions: 12
Worksheet time: 39mins
NAMA
CLASS
Determine the molar mass of chloroform gas if a sample weighing 0.389 g is collected in a
flask with a volume of 102 ml at 97°C. The pressure of the chloroform is 728 mmHg.
(1atm=760mmHg)
187 g/mol
121 g/mol
112 g/mol
31.6 g/mol
A mixture of three gases has a total pressure of 1,380 mmHg at 298 K. The mixture is analyzed and is found to contain 1.27 mol CO2, 3.04 mol CO, and 1.50 mol Ar. What is the partial pressure of Ar? ( 1atm=760mmHg)
0.258 atm
0.396 atm
0.469 atm
7.033 atm
Which of the following gases will hold a mass of 1.6 g in a 1.1 L container, 0 oC and 1 atm ?
SO2
O2
NH3
CH4
Which of the following condition(s) would be most likely to cause the ideal gas laws to fail?
I. High pressure
II. High temperature
III. Large volume
I only
II only
I and II only
I and III only
Figure 1 shows two flasks connected by a valve. Each flask contains gas A and
gas B separately at temperature T. If both gases do not react with each other,
what is the total pressure at temperature T when the valve is opened?
1.5 atm
2.5 atm
4.0 atm
6.0 atm
Figure 2 shows the graph of vapour pressure against temperature for four types
of liquids.
Which of the following statements is TRUE about liquids in Figure 2?
Acetic acid liquid is the most volatile.
Water has the highest boiling point.
Only diethyl ether and benzene boils at 1 atm.
The attractive forces between benzene molecules are stronger compared to diethyl ether.
What is the ability of a substance to be pulled into wires?
Malleability
Conductivity
Viscosity
Ductility
Which of the following statements is INCORRECT about liquid?
For any liquid, the vapour pressure increases as the temperature increases.
The higher the external pressure, the higher the boiling point of the liquid.
The stronger the intermolecular forces, the higher the boiling point of the liquid
Boiling point of a liquid does not depend on intermolecular forces that exist in the molecule.
What can be deducted from the phase diagram of compound Z given?
I. At 7 atm, the melting point of Z is higher than -57 .
II. At a pressure lower than 5.2 atm, solid Z does not melt.
III. At 1 atm and the temperature less than -57 ., solid Z undergoes sublimation.
I and II
I and III
II and III
I, II and III
On a relative basis, the weaker the intermolecular forces in a substances are,
The larger is its heat of vaporization
The more it deviates from the ideal gas law
The greater is its vapour pressure at a particular temperature
The higher is its boiling point
