In which of the following processes is $\Delta S$ negative?

  • A
    $H_2(g) \rightarrow 2H(g)$
  • B
    $C(\text{diamond}) \rightarrow C(\text{graphite})$
  • C
    $N_2(g) (1 \text{ atm}) \rightarrow N_2(g) (8 \text{ atm})$
  • D
    $2SO_2(g) + O_2(g) \rightarrow 2SO_3(g)$

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Similar Questions

$30.4 \, kJ$ of heat is required to melt one mole of sodium chloride and the entropy change at the melting point is $28.4 \, J \, K^{-1} \, mol^{-1}$ at $1 \, atm$. The melting point of sodium chloride is $........... \, K$ (Nearest Integer).

Explain entropy and spontaneity.

At $1 \ atm$ pressure,if $\Delta S_{\text{vap}} = 75 \ J \ K^{-1} \ mol^{-1}$ and $\Delta H_{\text{vap}} = 30 \ kJ \ mol^{-1}$,what will be the boiling point of the liquid in $K$?

Identify the correct statement regarding a spontaneous process:

The entropy of a sample of a certain substance increases by $0.836 \ J \ K^{-1}$ on adding reversibly $0.3344 \ J$ of heat at constant temperature. The temperature of the sample is.....$K$

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