Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 94

HARD

JEE Main/Advance

IMPORTANT

Earn 100

Identify true and false statements for fixed amount of gas in following isotherm of real gas.
(i) From point $P$ to point $S$ volume is constant and temperature is increasing.
(ii) From point $S$ to point $Q$ pressure is constant and temperature is decreasing.
(iii) Through path $P, S, Q$ we can convert gas into liquid through continuity of state.

Important Questions on States of Matter: Gases and Liquids

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 95

Explain the physical significance of Van der Waal's parameters.

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 96

The critical temperature and critical pressure of a gas are

31 ° C

and

728

atmospheres respectively.
Calculate the constants

' a'

and

' b' .

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 97

Calculate the volume occupied by $2.0$ mole of $N_{2}$ at $200 K$ and $8.21$ atm pressure,

if $\frac{P_{C} V_{C}}{{RT}_{C}} = \frac{3}{8}$ and $\frac{P_{r} V_{r}}{T_{r}} = 2.4$ .

HARD

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 98

Using the Van der Waals equation, calculate the pressure of $10.0 mol$ ${NH}_{3}$ gas in a $10.0 L$ vessel at $27 ° C$ .

$(P + n^{2} \frac{a}{V^{2}}) (V - nb) = nRT a = 4.2 L^{2} atm / {mol}^{2}, b = 0.037 L / mol$

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 99

If density of vapours of a substance of molar mass

18 g

at

1

atm pressure and

500 K

is

0.36 kg m^{- 3}

, calculate the value of

Z

for the vapours. (Take

R = 0.082 L atm {mole}^{- 1} K^{- 1}

)

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 100

One litre gas at

400 K

and

300

atm pressure is compressed to a pressure of

600

atm and

200 K

. The compressibility factor is changed from

1.2

to

1.6

, respectively. Calculate the final volume of the gas.

MEDIUM

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 101

Reduced temperature for benzene is

0.7277

and its reduced volume is

0.40 .

Calculate the reduced pressure of benzene.

EASY

JEE Main/Advance

IMPORTANT

Alpha Question Bank for Engineering: Chemistry>Chapter 3 - States of Matter: Gases and Liquids>Exercise-1>Q 102

Consider a real gas placed in a container. If the intermolecular attractions are supposed to disappear suddenly, which of the following would happen?