State the first law of thermodynamics.

Important Questions on Chemical Thermodynamics

EASY

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 4 - Chemical Thermodynamics>Exercises>Q 2

What is enthalpy of fusion?

EASY

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 4 - Chemical Thermodynamics>Exercises>Q 2

What is standard state of a substance?

EASY

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 4 - Chemical Thermodynamics>Exercises>Q 2

State whether $∆\mathrm{S}$ is positive, negative or zero for the reaction $2\mathrm{H}\left(\mathrm{g}\right)⟶{\mathrm{H}}_2\left(\mathrm{g}\right)$. Explain.

EASY

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 4 - Chemical Thermodynamics>Exercises>Q 2

State second law of thermodynamics in terms of entropy.

MEDIUM

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 4 - Chemical Thermodynamics>Exercises>Q 2

If the enthalpy change of a reaction is $\mathrm{\Delta H}$ how will you calculate entropy of surroundings?

EASY

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 4 - Chemical Thermodynamics>Exercises>Q 2

Comment on spontaneity of reactions for which $\mathrm{\Delta H}$ is positive and $\mathrm{\Delta S}$ is negative.

HARD

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 4 - Chemical Thermodynamics>Exercises>Q 3

Obtain the relationship between ${\mathrm{\Delta G}}^0$ of a reaction and the equilibrium constant.

EASY

12th Maharashtra Board

IMPORTANT

Chemistry Standard 12>Chapter 4 - Chemical Thermodynamics>Exercises>Q 3

What is entropy? Give its units.