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Which of the following is true for the reaction?
P
\( \mathrm{H}_{2} \mathrm{O}(\ell) \rightleftharpoons \mathrm{H}_{2} \mathrm{O}(\mathrm{g}) \) at \( 100^{\circ} \mathrm{C} \) and 1 atm pressure
(1) \( \Delta \mathrm{S}=0 \)
(2) \( \Delta \mathrm{H}=\mathrm{T} \Delta \mathrm{S} \)
(3) \( \Delta \mathrm{H}=\Delta \mathrm{U} \)
(4) \( \Delta \mathrm{H}=0 \)
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