Beta Question Bank for Medical: Chemistry>Chapter 4 - Thermodynamics>BEGINNER'S BOX>Q 12

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Latent heat of vaporisation of a liquid at $500 K$ and $1 atm$ pressure is $10.0 {kcal}^{- 1} {mol}^{- 1}$ . What will be the change in internal energy $(ΔE)$ of $3 mol$ of liquid at the same temperature?

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Important Questions on Thermodynamics

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Beta Question Bank for Medical: Chemistry>Chapter 4 - Thermodynamics>BEGINNER'S BOX>Q 14

If a reaction involves only solids and liquids, which of the following is true?

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Beta Question Bank for Medical: Chemistry>Chapter 4 - Thermodynamics>BEGINNER'S BOX>Q 18

When

229

J

of energy is supplied as heat at constant pressure to

3

mol

Ar (g)

, the temperature of the sample is increased by

2.55

K

. Calculate the molar heat capacity at constant volume:-

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Beta Question Bank for Medical: Chemistry>Chapter 4 - Thermodynamics>BEGINNER'S BOX>Q 21

Change in entropy is negative for:

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Beta Question Bank for Medical: Chemistry>Chapter 4 - Thermodynamics>BEGINNER'S BOX>Q 23

5

mole of an ideal gas expand reversibly from a volume of

8 {dm}^{3}

to

80 {dm}^{3}

at a temperature of

27 ° C

. The change in entropy is :

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Beta Question Bank for Medical: Chemistry>Chapter 4 - Thermodynamics>BEGINNER'S BOX>Q 24

The latent heat of vaporization of water at

100 ° C

is

540 cal g^{- 1} .

Calculate the increase in entropy when one mole of water at

100 ° C

has evaporated.

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Beta Question Bank for Medical: Chemistry>Chapter 4 - Thermodynamics>BEGINNER'S BOX>Q 26

If.

{ΔG}^{\circ} > 0

for a reaction then :

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Beta Question Bank for Medical: Chemistry>Chapter 4 - Thermodynamics>BEGINNER'S BOX>Q 28

The value of

ΔG

for the process

H_{2} O (s) ⟶ H_{2} O (ℓ)

at

1

atm

and

260

K

is:-

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Beta Question Bank for Medical: Chemistry>Chapter 4 - Thermodynamics>BEGINNER'S BOX>Q 29

In a certain chemical reaction

ΔH = 150

kJ

and

ΔS = 10

{JK}^{- 1}

at

300

K

. The value of

ΔG

would be: