Gas Laws and Ideal Gas Equation

IMPORTANT

Gas Laws and Ideal Gas Equation: Overview

This topic covers concepts such as Density and Molar Mass Relation, Gas Laws, Boyle's Law, Isotherm in Graph, Isobar in Graph, Isochore in Graph, Payload Capacity of Hot Air Balloon, and Vapour Density.

Important Questions on Gas Laws and Ideal Gas Equation

MEDIUM
IMPORTANT

A bubble of air is underwater at temperature   15 ο C and the pressure 1.5 bar. If the bubble rises to the surface where the temperature is   25°C and the pressure is 1.0 bar, what will happen to the volume of the bubble?

EASY
IMPORTANT

The correct value of the gas constant is close to:

EASY
IMPORTANT

If P, V, M, T and R are pressure, volume, molar mass, temperature and gas constant respectively, then for an ideal gas, the density is given by

MEDIUM
IMPORTANT

What is the value of PV at STP for 4g of hydrogen gas?

HARD
IMPORTANT

The volume of gas along with the solid substance is 100 cm3 at 760 mm Hg pressure and 80 cm3 at 1000 mm Hg pressure. What is the volume of the solid substance ?

HARD
IMPORTANT

The density of the gaseous mixture in a vessel (N2 and He) at 2.1 atmosphere and 310 K is 1.35 g/litre. If a small pin-hole is made on the wall of the vessel, through which gases effuse, then which of the following is the correct composition of the gases He and N2   effusing out initially?

MEDIUM
IMPORTANT

From a certain apparatus, the diffusion rate of hydrogen has an average value of 28.7 cm3 s-1. The diffusion of another gas under the same conditions is measured to have an average rate of 7.2 cm3s-1. Identify the gas.

MEDIUM
IMPORTANT

What should be the percentage increase in pressure for a 5% decrease in volume of a gas at constant temperature? 

EASY
IMPORTANT

A gas is heated from 273 K to 373 K at 1 atm pressure. If the initial volume of the gas is 10 L, its final volume would be

EASY
IMPORTANT

Air expands on heating and hence its density _____. (increases/ decreases)

EASY
IMPORTANT

For a fixed amount of gas at constant temperature, volume of a gas is _____ proportional to the pressure of a gas.

MEDIUM
IMPORTANT

Two separate bulbs contain ideal gas A and B. The density of gas A is twice that of B. The molecular mass of A is half that of B. The two gases are at the same temperature. The ratio of pressure A to that of gas B is:

HARD
IMPORTANT

The slope for an isochore plotted for a van der Waal's gas neglecting molecular attractions is equal to:

MEDIUM
IMPORTANT

In Charles' law, the line of the volume vs temperature graph is known as

EASY
IMPORTANT

According to the Boyle's law, as the pressure increases volume

MEDIUM
IMPORTANT

Boyle's law equation :  p =_____.

MEDIUM
IMPORTANT

Give its mathematical form of Boyle's law.

MEDIUM
IMPORTANT

State and explain Boyle's law.

MEDIUM
IMPORTANT

Write important characteristics of a gas based upon kinetic theory of gases. 

EASY
IMPORTANT

Match the following columns : 

Columns-I                                       Columns-II
(Graphical representation)             (X and Y coordinates)
(i)  Question Image                                                  (a)   pV vs V
(ii)         Question Image                                       (b)   p vs V
(iii)             Question Image                                  (c)  p vs 1/V