Which quantity out of ∆ r G and ∆ r G ∘ will be zero at equilibrium?

The relation between ∆ r G and ∆ r G ∘ (standard Gibb's free energy) of a reaction is as follows: ∆ r G = ∆ r G ∘ + RT ln K and, where, K is the equilibrium constant. At equilibrium, ∆ r G becomes zero and the standard Gibb's free energy becomes: Δ r G ∘ = - RT lnK .

E M B I B E

NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Short Answer Type>Q 29

EASY

11th CBSE

IMPORTANT

Earn 100

Increase in enthalpy of the surroundings is equal to decrease in enthalpy of the system. Will the temperature of system and surroundings be the same when they are in thermal equilibrium?

Important Questions on Thermodynamics

MEDIUM

11th CBSE

IMPORTANT

NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Short Answer Type>Q 30

At

298 K, K_{p}

for the reaction

N_{2} O_{4} (g) ⇌ 2 {NO}_{2} (g)

is

0.98

. Predict whether the reaction is spontaneous or not.

MEDIUM

11th CBSE

IMPORTANT

NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Short Answer Type>Q 31

A sample of $1.0$ mol of a monoatomic ideal gas is taken through a cyclic process of expansion and compression as shown in the Figure. What will be the value of $∆ H$ for the cycle as a whole?

Question Image

EASY

11th CBSE

IMPORTANT

NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Short Answer Type>Q 32

The standard molar entropy of

H_{2} O (l)

is

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

. Will the standard molar entropy of

H_{2} O (s)

be more, or less than

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

?

MEDIUM

11th CBSE

IMPORTANT

NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Short Answer Type>Q 33

Identify the state functions and path functions out of the following :

enthalpy, entropy, heat, temperature, work, free energy.

EASY

11th CBSE

IMPORTANT

NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Short Answer Type>Q 34

The molar enthalpy of vapourisation of acetone is less than that of water. Why?

MEDIUM

11th CBSE

IMPORTANT

NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Short Answer Type>Q 35

Which quantity out of

∆_{r} G

and

∆_{r} G^{\circ}

will be zero at equilibrium?

EASY

11th CBSE

IMPORTANT

NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Short Answer Type>Q 36

Predict the change in internal energy for an isolated system at constant volume.

MEDIUM

11th CBSE

IMPORTANT

NCERT Exemplar Chemistry - Class 11>Chapter 6 - Thermodynamics>Short Answer Type>Q 37

Although heat is a path function but heat absorbed by the system under certain specific conditions is independent of path. What are those conditions? Explain.

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