Amongst the chemical reactions given below, t | vedclass

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

Question

(C) Entropy $(S)$ increases when the disorder of the system increases, such as phase changes from liquid to gas or an increase in the number of gaseou

Vedclass · Accepted Answer

$(i)$, $(ii)$, $(iv)$

Vedclass · Answer

(C) Entropy $(S)$ increases when the disorder of the system increases, such as phase changes from liquid to gas or an increase in the number of gaseous moles.$(i)$ $H_2O_{(l)} ightarrow H_2O_{(g)}$: Phase change from liquid to gas increases entropy.$(ii)$ $C_{(s)} + CO_{2(g)} ightarrow 2CO_{(g)}$: The number of gaseous moles increases from $1$ to $2$, so entropy increases.$(iii)$ $2H_{2(g)} + O_{2(g)} ightarrow 2H_2O_{(l)}$: Gaseous reactants form a liquid product, so entropy decreases.$(iv)$ $N_{2(g)} + O_{2(g)} ightarrow 	ext{Mixture of } N_2 	ext{ and } O_2$: Mixing of gases increases the randomness of the system, so entropy increases.Therefore, reactions $(i)$, $(ii)$, and $(iv)$ show an increase in entropy.

$a$. Liquid to vapor conversion	$1$. $\Delta S = 0$
$b$. Reaction not spontaneous at any temperature,$\Delta H = (+)$	$2$. $\Delta S = (+)$
$c$. Reversible expansion of an ideal gas	$3$. $\Delta S = (-)$

Similar Questions

For a spontaneous process,

For a process,entropy change of a system is expressed as

What is the change in entropy of the surroundings for the reaction, $H_2(g) + 1/2 O_2(g) \rightarrow H_2O(l)$ at $298 \text{ K}$, if the standard enthalpy of formation of water is $-286 \text{ kJ mol}^{-1}$?

If the enthalpy of fusion of a compound at $27 \, ^\circ C$ is $2930 \, J/mol$,what is the entropy change in $J/mol \cdot K$?

Match the following processes with their corresponding entropy changes:
$a$. Liquid to vapor conversion $1$. $\Delta S = 0$
$b$. Reaction not spontaneous at any temperature,$\Delta H = (+)$ $2$. $\Delta S = (+)$
$c$. Reversible expansion of an ideal gas $3$. $\Delta S = (-)$

Vedclass Test Series

Exam Paper Generator

Online Exam Module