Temperature threshold for spontaneity
A process in a school extension laboratory has \(\Delta H=90\,\text{kJ mol}^{-1}\) and \(\Delta S=180\,\text{J K}^{-1}\text{mol}^{-1}\). Estimate the temperature where \(\Delta G=0\). 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.
Write a full answer
Now write the response in full, in your own words — this is what the exam asks for. The AI marks it on the same moves you built above (focus, evidence, technique, judgement) and gives feedback on reasoning, evidence, and expression.