Which of the following reactions has Delta S | vedclass

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

Question

(C) Entropy $(S)$ is a measure of the randomness or disorder of a system. $\Delta S > 0$ implies an increase in entropy,which typically occurs when th

Vedclass · Accepted Answer

$NaNO_{3(s)} \rightleftharpoons Na^+_{(aq)} + NO_{3(aq)}^-$

Vedclass · Answer

(C) Entropy $(S)$ is a measure of the randomness or disorder of a system. $\Delta S > 0$ implies an increase in entropy,which typically occurs when the number of moles of gaseous products is greater than the number of moles of gaseous reactants,or when a solid dissolves into ions in an aqueous solution.$A$: $1 	ext{ mole of gas} ightarrow 0 	ext{ moles of gas}$. $\Delta S $B$: $	ext{Aqueous solution} ightarrow 	ext{Solid}$. $\Delta S $C$: $1 	ext{ mole of solid} ightarrow 2 	ext{ moles of aqueous ions}$. This process involves the dissolution of a solid,which significantly increases the disorder of the system. Thus,$\Delta S > 0$.$D$: $4 	ext{ moles of gas} ightarrow 2 	ext{ moles of gas}$. $\Delta S Therefore,the correct option is $C$.

Which of the following reactions has $\Delta S > 0$?

Similar Questions

State the characteristics of entropy.

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 $70 \ J \ K^{-1} \ mol^{-1}$?

The $\Delta S$ for the vaporisation of $1 \ mol$ of water is $88.3 \ J/mol \ K$. The value of $\Delta S$ for the condensation of $1 \ mol$ of vapour will be.......$ J/mol \ K$

Find the correct statement.

For a process to be spontaneous,the total entropy change of the system and its surroundings must be $ \Delta S_{total} > 0 $. This condition is characteristic of which type of process?

Vedclass Test Series

Exam Paper Generator

Online Exam Module