The condition for a spontaneous process is ......

  • A
    $\Delta S_{\text{total}} = \Delta S_{\text{sys}} + \Delta S_{\text{surr}} > 0$
  • B
    $\Delta S_{\text{total}} = \Delta S_{\text{sys}} + \Delta S_{\text{surr}} < 0$
  • C
    $\Delta S_{\text{total}} = \Delta S_{\text{sys}} + \Delta S_{\text{surr}} = 0$
  • D
    $\Delta S_{\text{surr}} + \Delta S_{\text{univ}} = 0$

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What happens to the entropy of water when it freezes to form an ice cube?

Which of the following compounds has the highest standard molar entropy?

In which of the following processes does entropy decrease?

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$. $\Delta S = (+)$
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Calculate the entropy change in $JK^{-1}$ for the reversible expansion of $5 \ mol$ of an ideal gas at $27 \ ^oC$ from $8 \ dm^3$ to $80 \ dm^3$.

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