Observe the following reactions:I. CaCO_{3(s) | vedclass

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(B) Entropy $(S)$ is a measure of the randomness or disorder of a system.In reaction $I$,a solid decomposes into a solid and a gas. Since the number o

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$I, II$ Only

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(B) Entropy $(S)$ is a measure of the randomness or disorder of a system.In reaction $I$,a solid decomposes into a solid and a gas. Since the number of gaseous moles increases,entropy increases.In reaction $II$,one mole of gaseous $Cl_2$ molecule dissociates into two moles of gaseous $Cl$ atoms. The increase in the number of particles leads to an increase in entropy.In reaction $III$,liquid water freezes into solid ice. This process involves a decrease in randomness,so entropy decreases.Therefore,entropy increases in reactions $I$ and $II$.

Observe the following reactions:
$I$. $CaCO_{3(s)} \rightarrow CaO_{(s)} + CO_{2(g)}$
$II$. $Cl_{2(g)} \rightarrow 2 Cl_{(g)}$
$III$. $H_2O_{(l)} \rightarrow H_2O_{(s)}$
Identify the reactions in which entropy increases.

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Observe the following reactions:$I$. $CaCO_{3(s)} \rightarrow CaO_{(s)} + CO_{2(g)}$$II$. $Cl_{2(g)} \rightarrow 2 Cl_{(g)}$$III$. $H_2O_{(l)} \rightarrow H_2O_{(s)}$Identify the reactions in which entropy increases.