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Assertion : A reaction which is spontaneous and accompanied by decrease of randomness must be exothermic.
Reason : All exothermic reactions are accompanied by decrease of randomness.
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Reason : All exothermic reactions are accompanied by decrease of randomness.
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If assertion is true but reason is false
$\begin{aligned} & \text { (c) }: \Delta G=\Delta H-T \Delta S \\ & - \text { ve }=\Delta H-[T(- \text { ve) }] \text { (as spontaneous) }\end{aligned}$
Exothermic reactions may be accompanied by increase or decrease of randomness.
Exothermic reactions may be accompanied by increase or decrease of randomness.
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