Question

At $${27^ \circ }C$$  a sample of ammonia gas exerts a pressure of 5.3 atm. What is the pressure when the volume of the gas is reduced to one-tenth of the original value at the same temperature?

A. 0.53$$\,atm$$
B. 5.3$$\,atm$$
C. 53$$\,atm$$  
D. None of these
Answer :   53$$\,atm$$
Solution :
$$\eqalign{ & {P_1}{V_1} = {P_2}{V_2} \cr & {V_1} = V,{V_2} = \frac{V}{{10}} \cr & \frac{{5.3\,atm}}{{{P_2}}} = \frac{{\frac{V}{{100}}}}{V};\,{P_2} = 5.3 \times 100 = 53\,atm \cr} $$

Releted MCQ Question on
Physical Chemistry >> States of Matter Solid, Liquid and Gas

Releted Question 1

Equal weights of methane and oxygen are mixed in an empty container at $${25^ \circ }C.$$  The fraction of the total pressure exerted by oxygen is

A. $$\frac{1}{3}$$
B. $$\frac{1}{2}$$
C. $$\frac{2}{3}$$
D. $$\frac{1}{3} \times \frac{{273}}{{298}}$$
Releted Question 2

The temperature at which a real gas obeys the ideal gas laws over a wide range of pressure is

A. Critical temperature
B. Boyle temperature
C. Inversion temperature
D. Reduced temperature
Releted Question 3

The ratio of root mean square velocity to average velocity of a gas molecule at a particular temperature is

A. 1.086 : 1
B. 1 : 1.086
C. 2 : 1.086
D. 1.086 : 2
Releted Question 4

Helium atom is two times heavier than a hydrogen molecule. At $$298 K,$$  the average kinetic energy of a helium atom is

A. two times that of a hydrogen molecule.
B. same as that of a hydrogen molecule.
C. four times that of a hydrogen molecule.
D. half that of a hydrogen molecule.

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States of Matter Solid, Liquid and Gas


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