Suggest the most important type of intermolecular attractive interaction in the following pairs. (i) n-hexane and n-octane (ii) I 2 and CCl 4 (iii) NaClO 4 and water (iv) Methanol and acetone (v) Acetonitrile (CH 3 CN) and acetone (C 3 H 6 O) Make selections from the following choices.

(i) London's forces (ii) London's forces (iii) Ion dipole interactions (iv) Intermolecular H-bonding (v) Dipole-dipole interaction

(i) Ion dipole interactions (ii) Intermolecular H-bonding (iii) London's forces (iv) London's forces (v) Dipole-dipole interaction

(i) Dipole-dipole interaction (ii) Intermolecular H-bonding (iii) Ion dipole interactions (iv) London's forces (v) London's forces

(i) Dipole-dipole interaction (ii) London's forces (iii) London's forces (iv) Intermolecular H-bonding (v) Ion dipole interactions

Suggest the most important type of intermolecular attractive interaction in the following pairs. (i) n-hexane and n-octane (ii) I 2 and CCl 4 (iii) NaClO 4 and water (iv) Methanol and acetone (v) Acetonitrile (CH 3 CN) and acetone (C 3 H 6 O) Make selections from the following choices.

(i) London's forces (ii) London's forces (iii) Ion dipole interactions (iv) Intermolecular H-bonding (v) Dipole-dipole interaction

Match the type of interaction in column A with the distance dependence of their interaction energy in column B : A B (i) ion - ion (a) 1 r (ii) Dipole - dipole (b) 1 r 2 (iii) London dispersion (c) 1 r 3 (d) 1 r 6

(i) – (a); (ii) – (c); (iii) – (d)

(i) – (b); (ii) – (d); (iii) – (c)

(i) – (a); (ii) – (b); (iii) – (d)

(i) – (a); (ii) – (b); (iii) – (c)

Increasing order of boiling points in the following compounds is: CH 3 COOH ( i ) CH 3 CH 2 CHO ( ii ) CH 3 CH 2 CH 2 OH ( iii ) CH 3 COCH 3 ( iv )

( ii ) < ( i v ) < ( i i i ) < ( i )

( ii ) < ( i v ) > ( i i i ) < ( i )

( iv ) < ( ii ) > ( i ) < ( iii )

( iv ) < ( iii ) < ( ii ) < ( i )

A piston filled with 0.04 mol of an ideal gas expands reversibly from 50.0 mL to 375 mL at a constant temperature of 3 7 . 0 ∘ C . As it does so, it absorbs 208 J of heat. The values of q and w for the process will be (R = 8.314 J/mol K) (ln7.5 = 2.01)

q = + 2 0 8 J , w ⁡ = - 2 0 8 J

q = + 2 0 8 J , w ⁡ = + 2 0 8 J

q = - 2 0 8 J , w ⁡ = - 2 0 8 J

EASY

Earn 100

Suggest the most important type of intermolecular attractive interaction in the following pairs.

(i) n-hexane and n-octane
(ii) I₂ and CCl₄
(iii) NaClO₄ and water
(iv) Methanol and acetone
(v) Acetonitrile (CH₃CN) and acetone (C₃H₆O)

Make selections from the following choices.

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Important Questions on States of Matter

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In which of the following solid substance dispersion forces exist?

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The intermolecular interaction that is dependent on the inverse cube of distance between the molecules is:

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The dipole-dipole interaction energy between stationary polar molecules and rotating polar molecules, respectively is proportional to
[

r

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A piece of ice falls from a height

h

so that it melts completely. Only one-quarter of the heat produced is absorbed by the ice and all energy of ice gets converted into heat during its fall. The value of

h

is:
(Latent heat of ice is

3.4 \times 10^{5} {J kg}^{- 1}

and

g = 10 {N kg}^{- 1}

)

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The type of attractive forces that operate between gaseous

HCl

molecules is

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Dipole - induced dipole interactions are present between which of the following pairs?

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The interaction energy of London forces between two particles is proportional to

r^{x}

, where

r

is the distance between the particles. The value of

x

is :

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A reversible cyclic process for an ideal gas is shown below. Here,

P, V, a n d T

are pressure, volume and temperature, respectively. The thermodynamic parameters

q, w, H a n d U

are heat, work, enthalpy and internal energy, respectively.

Question Image

The correct option(s) is (are)

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Intermolecular Forces and Thermal Energy

Match the type of interaction in column $A$ with the distance dependence of their interaction energy in column $B :$

A	B
(i) ion - ion	(a) $\frac{1}{r}$
(ii) Dipole - dipole	(b) $\frac{1}{r^{2}}$
(iii) London dispersion	(c) $\frac{1}{r^{3}}$
	(d) $\frac{1}{r^{6}}$

EASY

Chemistry>Physical Chemistry>States of Matter>Intermolecular Forces and Thermal Energy

Increasing order of boiling points in the following compounds is:

$\underset{(i)}{{CH}_{3} COOH} \underset{(ii)}{{CH}_{3} {CH}_{2} CHO} \underset{(iii)}{{CH}_{3} {CH}_{2} {CH}_{2} OH} \underset{(iv)}{{CH}_{3} {COCH}_{3}}$

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Intermolecular Forces and Thermal Energy

The qualitative sketches I, II and III given below show the variation of surface tension with molar concentration of three different aqueous solutions of KCl,

C H_{3} O H

and

C H_{3} {(C H_{2})}_{11} O S O_{3}^{-} N a^{+}

at room temperature. The correct assignment of the sketches is -

Question Image

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The relative strength of the interionic/ intermolecular forces in a decreasing order is:

HARD

Chemistry>Physical Chemistry>States of Matter>Intermolecular Forces and Thermal Energy

An ideal gas undergoes isothermal compression from

5 m^{3}

1 m^{3}

against a constant external pressure of

4 N m^{- 2}

. The heat released in this process is

24 J {mol}^{- 1} K^{- 1}

and is used to increase the pressure of

1

mole of

Al

. The temperature of

Al

increases by:

HARD

Chemistry>Physical Chemistry>States of Matter>Intermolecular Forces and Thermal Energy

The dipole-dipole interaction energy between rotating polar molecules is proportional to, where '

r

' is the distance between polar molecules.

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Intermolecular Forces and Thermal Energy

The combination of plots which does not represent isothermal expansion of an ideal gas is

$(A)$ Question Image

$(B)$

$(C)$

$(D)$

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Intermolecular Forces and Thermal Energy

A piston filled with 0.04 mol of an ideal gas expands reversibly from 50.0 mL to 375 mL at a constant temperature of

37 . 0^{\circ} C

. As it does so, it absorbs 208 J of heat. The values of q and w for the process will be
(R = 8.314 J/mol K) (ln7.5 = 2.01)

HARD

Chemistry>Physical Chemistry>States of Matter>Intermolecular Forces and Thermal Energy

The above

P - V

diagram represents the thermodynamic cycle of an engine, operating with an ideal mono-atomic gas. The amount of heat, extracted from the source in a single cycle, is:

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Chemistry>Physical Chemistry>States of Matter>Intermolecular Forces and Thermal Energy

Rare gases are sparingly soluble in water because of

EASY

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The predominant intermolecular forces present in ethyl acetate, a liquid, are:

EASY

Chemistry>Physical Chemistry>States of Matter>Intermolecular Forces and Thermal Energy

Which intermolecular force is most responsible in allowing xenon gas to liquefy?

(i)	London's forces
(ii)	London's forces
(iii)	Ion dipole interactions
(iv)	Intermolecular H-bonding
(v)	Dipole-dipole interaction

Suggest the most important type of intermolecular attractive interaction in the following pairs. (i) n-hexane and n-octane (ii) I2 and CCl4 (iii) NaClO4 and water (iv) Methanol and acetone (v) Acetonitrile (CH3CN) and acetone (C3H6O) Make selections from the following choices.

Important Questions on States of Matter

Learn and Prepare for any exam you want !

Suggest the most important type of intermolecular attractive interaction in the following pairs.

(i) n-hexane and n-octane
(ii) I₂ and CCl₄
(iii) NaClO₄ and water
(iv) Methanol and acetone
(v) Acetonitrile (CH₃CN) and acetone (C₃H₆O)

Make selections from the following choices.