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Chemistry

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Lorenza Eichmann

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Cards in this guide (10)
What is the latent heat of fusion

It is the amount of heat that is required to melt something, and the amount of heat that it gives off when it freezes. (They are the same amount.)

What defines an exothermic reaction

A reaction that produces heat

What does the difference in potential energy between the reactants and products represent

It represents the change in enthalpy for the reaction.

How is an exothermic reaction identified

It gives off heat as a product.

How does the phase of water affect its specific heat capacity

Liquid water has the highest specific heat capacity.

What does the field of thermodynamics relate to

Changes in energy in systems

What happens when a glass of water is set in the sun until the water evaporates

Entropy increases.

What does the enthaply of reaction measure

The enthalpy of reaction is the change of the system enthalpy after a chemical reaction.

What does the second law of thermodynamics say apex

The entropy of the universe is increasing

Which reaction shows that the enthalpy of formation of H2S is Hf -20.6 kJmol

H2(g) + S(s) —> H2S + 20.6 kJ

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