IB skill practice

Use formation and combustion enthalpy data

Paper 1, Paper 2 5 marks Difficulty 5

Combustion enthalpy from heat released

A fuel sample in a environmental chemistry case study releases \(24\,\text{kJ}\) when \(0.26\,\text{mol}\) burns. Calculate the molar enthalpy of combustion. Enter the answer and choose the interpretation that matches the HL chemistry evidence.

Worked practice: chemistry evidence and answer

Use the chemical evidence first, then enter the result and interpretation that match it.