Which of the following phase transitions gives off more...

Which of the following phase transitions gives off more heat? (a) 1 mole of steam to 1 mole of water at $100^{\circ} \mathrm{C},$ or $(\mathrm{b}) 1 \mathrm{mole}$ of water to 1 mole of ice at $0^{\circ} \mathrm{C}$.

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Key Concepts

Latent Heat of Condensation vs. Fusion

The latent heat of condensation (from gas to liquid) and the latent heat of fusion (from liquid to solid) are specific cases of latent heat. Typically, the latent heat of condensation is higher than the latent heat of fusion, meaning that converting steam to liquid water releases more energy per mole than water freezing into ice.

Enthalpy Change

Enthalpy change is a thermodynamic quantity that reflects the total heat content during a phase transition. In the context of latent heat, it represents the specific energy released (exothermic) or absorbed (endothermic) when the substance changes phase, as determined by the latent heat value specific to that transition.

Latent Heat

Latent heat is the energy absorbed or released by a substance during a phase transition, such as melting, freezing, condensation, or vaporization, without a change in temperature. It is an important concept because it quantifies the amount of heat involved in changing the state of a substance.

Phase Transition

A phase transition refers to the change of a substance from one state of matter to another, such as from gas to liquid or from liquid to solid. This change occurs at specific temperatures and pressures and involves an energy change with no concurrent change in temperature during the transition.

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