IB skill practice

Use Gibbs energy to predict spontaneity

Paper 1, Paper 2 5 marks Difficulty 5

Spontaneity from Gibbs sign

A calculation in a university-style tutorial gives \(\Delta G=-12\,\text{kJ mol}^{-1}\) at constant temperature and pressure. State the spontaneity conclusion. Use the labelled diagram, graph, or data table before calculating. 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.