The second law of thermodynamics states that in a cyclic process:

  • A
    work cannot be converted into heat
  • B
    heat cannot be converted into work
  • C
    work cannot be completely converted into heat
  • D
    heat cannot be completely converted into work

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$18 \ g$ of ice is converted into water at $0 \ ^\circ C$ and $1 \ atm$. The entropies of $H_2O_{(s)}$ and $H_2O_{(l)}$ are $38.2$ and $60 \ J/mol \ K$ respectively. The enthalpy change for this conversion is ..... $J/mol$.

In an isolated system,find the condition for a spontaneous reaction.

In which state does matter have the highest entropy?

For the reaction $H_2O_{(l)} \longrightarrow H_2O_{(g)}$ at $T=100^{\circ} C$ and $P=1 \ atm$,choose the correct option:

Which of the following equations indicates an increase in entropy?

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