Which of the following processes is associate | vedclass

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(B) Entropy $(S)$ is a measure of the randomness or disorder of a system. Processes that lead to a more ordered state result in a decrease in entropy

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Crystallisation of a liquid into a solid

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(B) Entropy $(S)$ is a measure of the randomness or disorder of a system. Processes that lead to a more ordered state result in a decrease in entropy $(\Delta S $(A)$ Raising the temperature of a solid increases the vibrational motion of particles,leading to an increase in entropy. $(B)$ Crystallisation of a liquid into a solid involves the transition from a disordered liquid state to a highly ordered crystalline solid state,which results in a decrease in entropy. $(C)$ The decomposition of $2NaHCO_{3(s)}$ produces gaseous products ($CO_2$ and $H_2O$),which significantly increases the disorder of the system. $(D)$ The dissociation of $H_{2(g)}$ into $2H_{(g)}$ increases the number of particles and the randomness of the system,leading to an increase in entropy. Therefore,the correct option is $B$.

Which of the following processes is associated with a decrease in entropy?

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