A-LevelChemistryChemical energeticsOct/Nov 2017Paper 1 Q61 Mark
In calculating the enthalpy change, ∆H, of an experiment involving solutions, the mass of the solution, m, specific heat capacity of the solution, c, and the temperature change, ∆T, are needed. ∆T = Tfinal - Tinitial Which expression for ∆H is correct?
A∆H = mc/∆T
B∆H = -mc/∆T
C∆H = mc∆T
D∆H = -mc∆T
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The correct answer is D. This question tests the candidate's understanding of chemical energetics within the Chemistrysyllabus. The examiner's mark scheme requires...
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