Thermodynamics (C)

Assertion : $U$ is a state function. Reason : $T$ is an intensive property.

In isolated system, find the condition for spontaneous reaction.

Assertion : The graph between $P v / s 1 / V$ is a straight line. Reason : At constant temperature, $P \propto 1 / V$.

Reaction, $A \rightleftharpoons B+3 C$ at $25^{\circ} \mathrm{C}$ is in equilibrium. If equilibrium constant and Gibbs' free energy for this reaction are $y$ and $x$ respectively, then the Gibbs' free energy for…

At $25^{\circ} \mathrm{C}$, when 1 mole of butane is heated, $\mathrm{CO}_2$ and liquid $\mathrm{H}_2 \mathrm{O}$ are formed, then the work done is

Assertion : Addition of $Q$ and $w$ gives $\Delta U$. Reason : Addition of two path functions cannot give state function.

What is the entropy change in $2 \mathrm{~mol} \mathrm{~N}_2$, when its temperature is taken from $400 \mathrm{~K}$ to $800 \mathrm{~K}$, at constant pressure?

1 mole of an ideal gas expands isothermally reversibly from 2 litre to 4 litre and 3 moles of the same gas expands from 2 litre to $x$ litre and doing same work, what is ' $x$ '?

Which of the following are extensive properties?

If one monoatomic gas is expanded adibatically from $2 \mathrm{~L}$ to $10 \mathrm{~L}$ at $1 \mathrm{~atm}$ external pressure then the value of $\Delta U$ (in atm $\mathrm{L}$) is

Assertion : Spontaneous process is an irreversible process and may be reversed by some external agency. Reason : Decrease in enthalpy is a contributory factor for spontaneity.

The heat is liberated when $1.89 \mathrm{~g}$ of benzoic acid is burnt in a bomb calorimeter at $25^{\circ} \mathrm{C}$ and it increases the temperature of $18.94 \mathrm{~kg}$ of water by $0.632^{\circ} \mathrm{C}$. If…