(A) Entropy $(S)$ is a state function and its value depends on the state of the system,which is defined by variables like temperature $(T)$,pressure $

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Both $\Delta S$ and $S$ are functions of temperature.

(A) Entropy $(S)$ is a state function and its value depends on the state of the system,which is defined by variables like temperature $(T)$,pressure $(P)$,and volume $(V)$.Since $S = f(T, P, V)$,entropy is a function of temperature.Similarly,the change in entropy $(\Delta S = S_2 - S_1)$ also depends on the initial and final states of the system,which are defined by temperature.Therefore,both $S$ and $\Delta S$ are functions of temperature.

Class 11 Chemistry Thermodynamics 2 nd Law of thermodynamics and Entropy

Medium

The true statement amongst the following is

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A
Both $\Delta S$ and $S$ are functions of temperature.
B
$S$ is not a function of temperature but $\Delta S$ is a function of temperature.
C
Both $S$ and $\Delta S$ are not functions of temperature.
D
$S$ is a function of temperature but $\Delta S$ is not a function of temperature.

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Thermodynamics

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2 nd Law of thermodynamics and Entropy

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For a reversible expansion of $5 \, \text{mol}$ of an ideal gas at $27 \, ^\circ\text{C}$ from a volume of $8 \, \text{dm}^3$ to $80 \, \text{dm}^3$,the change in entropy is ...... $J \, K^{-1}$.

Medium

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Calculate $\Delta S_{total}$ for a certain reaction at $298 \ K$ if $\Delta H^{\circ} = -208.6 \ kJ$ and $\Delta S^{\circ} = -36 \ J \ K^{-1}$. (in $J \ K^{-1}$)

MediumMHT CET 2025

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The true statement amongst the following is

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For a sample of a perfect gas,when its pressure is changed isothermally from $p_i$ to $p_f$,the entropy change is given by:

The enthalpy of vapourization of a liquid is $30 \ kJ \ mol^{-1}$ and entropy of vapourization is $75 \ J \ mol^{-1} \ K^{-1}$. The boiling point of the liquid at $1 \ atm$ is.......$K$

The standard entropies of $CO_{2(g)}$,$C_{(s)}$ and $O_{2(g)}$ are $213.5$,$5.690$ and $205 \ J \ K^{-1} \ mol^{-1}$ respectively. The standard entropy of formation of $CO_{2(g)}$ is ...... $J \ K^{-1} \ mol^{-1}$.

For a reversible expansion of $5 \, \text{mol}$ of an ideal gas at $27 \, ^\circ\text{C}$ from a volume of $8 \, \text{dm}^3$ to $80 \, \text{dm}^3$,the change in entropy is ...... $J \, K^{-1}$.

Calculate $\Delta S_{total}$ for a certain reaction at $298 \ K$ if $\Delta H^{\circ} = -208.6 \ kJ$ and $\Delta S^{\circ} = -36 \ J \ K^{-1}$. (in $J \ K^{-1}$)

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