Which one of the following has Delta S^o grea | vedclass

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

Question

(C) Entropy $(\Delta S^o)$ is a measure of the disorder or randomness of a system.
For a reaction,$\Delta S^o > 0$ when the disorder increases,whi

Vedclass · Accepted Answer

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

Vedclass · Answer

(C) Entropy $(\Delta S^o)$ is a measure of the disorder or randomness of a system.
For a reaction,$\Delta S^o > 0$ when the disorder increases,which typically occurs when the number of moles of gas increases or when a solid dissolves into aqueous ions.
In option $(C)$,$NaNO_{3(s)}$ (a solid) dissolves to form $Na^{+}_{(aq)}$ and $NO_{3(aq)}^{-}$ (aqueous ions),which increases the disorder of the system.
In options $(A)$,$(B)$,and $(D)$,the number of gas moles decreases or the system moves from a more disordered state to a more ordered state,resulting in $\Delta S^o < 0$.

Which one of the following has $\Delta S^o$ greater than zero?

Similar Questions

Which of the following statements is correct?

Standard entropy of $X_2, Y_2$ and $XY_3$ are $60, 40$ and $50 \ J \ K^{-1} \ mol^{-1},$ respectively. For the reaction,$\frac{1}{2}X_2 + \frac{3}{2}Y_2 \to XY_3, \ \Delta H = -30 \ kJ,$ to be at equilibrium,the temperature will be ............... $K$.

Which of the following equations indicates an increase in entropy?

$A$ heat engine is operating between $500 \ K$ and $400 \ K$. If the engine absorbs $100 \ J$ of heat,which of the following is an impossible amount of heat rejected by the engine (in $J$)?

What is the change in entropy in $J \ K^{-1} \ mol^{-1}$ for the conversion of $1 \ mol$ of ice to water at $0 \, ^\circ C$? For the process $H_2O_{(s)} \rightarrow H_2O_{(l)}$ at $0 \, ^\circ C$,$\Delta H_{fus} = 6 \, kJ \ mol^{-1}$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module