A total of 2.00 mol of a compound is allowed to react with water in a foam coffee cup and the reaction produces 150 g of solution. The reaction caused the temperature of the solution to rise from 21.00 to 24.70 ∘C. What is the enthalpy of this reaction?

The Enthalpy of the reaction ΔH = 0.945

Explanation:

Given data

Mass = 0.15 kg

Change in temperature = 24 - 21 = 3 °c

Enthalpy of the solution is given by

ΔH = m ΔT

ΔH = 0.15 × 4.2 × 3

ΔH = 1.89 KJ

Enthalpy change per mole

ΔH =

ΔH = 0.945

Therefore the Enthalpy of the reaction ΔH = 0.945

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