Calorimetry

11.4 Enthalpy

By Lan Vu

1st Law of Thermodynamics​

Subject | Subject

Calorimetry

• used to measure amounts of heat transferred to or from a substance.

• Enthalpy (ΔH)- the amount of heat exchanged per mol of the reactant​

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​Calorimeter

​Device used to determine the amount of heat exchange ina reaction

Steps in Calorimetry Problems

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When a 25.7 g of NaI dissolves in 80.0 mL of water​ in a calorimeter, the temperature rises from 20.5^oC to 24.4^oC. Calculate the ΔH for the process.

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