For the reaction 2 H_{2(g)} + O_{2(g)} longri | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) The relationship between Gibbs free energy,enthalpy,and entropy is given by the equation: $\Delta G = \Delta H - T\Delta S$. Rearranging for entro

Vedclass · Accepted Answer

$-44 \ J \ K^{-1}$

Vedclass · Answer

(D) The relationship between Gibbs free energy,enthalpy,and entropy is given by the equation: $\Delta G = \Delta H - T\Delta S$. Rearranging for entropy change: $\Delta S = \frac{\Delta H - \Delta G}{T}$. Given: $\Delta H = -241.60 \ kJ \ mol^{-1} = -241600 \ J \ mol^{-1}$,$\Delta G = -228.4 \ kJ \ mol^{-1} = -228400 \ J \ mol^{-1}$,and $T = 300 \ K$. Substituting the values: $\Delta S = \frac{-241600 - (-228400)}{300} \ J \ K^{-1}$. $\Delta S = \frac{-241600 + 228400}{300} \ J \ K^{-1} = \frac{-13200}{300} \ J \ K^{-1} = -44 \ J \ K^{-1}$.

For the reaction $2 H_{2(g)} + O_{2(g)} \longrightarrow 2 H_2O_{(g)}$,at $300 \ K$,$\Delta G$ and $\Delta H$ of water are $-228.4 \ kJ \ mol^{-1}$ and $-241.60 \ kJ \ mol^{-1}$,respectively. Calculate the value of change in entropy for the given reaction.

Similar Questions

The entropy values (in $J K^{-1} mol^{-1}$) of $H_{2(g)} = 130.6$,$Cl_{2(g)} = 223.0$ and $HCl_{(g)} = 186.7$ at $298 \ K$ and $1 \ atm$ pressure. Then entropy change for the reaction $H_{2(g)} + Cl_{2(g)} \to 2HCl_{(g)}$ is :-

What happens to the entropy of water when it freezes to form an ice cube?

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 the entropy change in $JK^{-1}$ for the reversible expansion of $5 \ mol$ of an ideal gas at $27 \ ^oC$ from $8 \ dm^3$ to $80 \ dm^3$.

The enthalpy of vaporization of water is $186.5 \, kJ \, mol^{-1}$. What is the entropy of vaporization in $kJ \, K^{-1} \, mol^{-1}$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module