Which of the following processes is non-spontaneous?

  • A
    Mixing of two different gases
  • B
    Reaction of water with sodium
  • C
    Reaction of sulfuric acid with lime
  • D
    Boiling of water at normal pressure and $60\,^oC$

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Which of the following is correct regarding entropy?

What is entropy?

When naphthalene is heated strongly,it undergoes sublimation. What happens to the entropy of the system?

The entropy change for the conversion of $1 \, \text{mol}$ of liquid water to steam at $373 \, K$ is ...... $J/K$ (Given: $\Delta H_{\text{vap}} = 2.257 \, kJ/g$). (in $0.9$)

$1$ mole of a diatomic gas is heated through an isochoric process from $300\,K$ to $500\,K$. The change in entropy is: (in $,J/K$)

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