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Enthalpy of Solution from Calorimeter Temperature Rise Calculator

ΔH_soln = −(m·c·ΔT) / n_solute.

Compute the molar enthalpy of solution ΔH_soln (kJ/mol) of a salt dissolving in water, from a coffee-cup calorimeter experiment: q = m_solution · c · ΔT (with c = 4.184 J·g⁻¹·K⁻¹ for dilute aqueous), and ΔH_soln = −q / n_solute. Exothermic dissolution gives ΔT > 0 and ΔH_soln < 0.

Dr. Helena Ortiz By Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

g
J g⁻¹ K⁻¹
K
mol

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

ΔH = −m·c·ΔT / n.

In depth

Compute the molar enthalpy of solution ΔH_soln (kJ/mol) of a salt dissolving in water, from a coffee-cup calorimeter experiment: q = m_solution · c · ΔT (with c = 4.184 J·g⁻¹·K⁻¹ for dilute aqueous), and ΔH_soln = −q / n_solute. Exothermic dissolution gives ΔT > 0 and ΔH_soln < 0.