IB skill practice

Determine reaction order from initial rate data

Paper 1, Paper 2 5 marks Difficulty 4

Zero order initial-rate evidence

A data table in a Auckland reaction-rate practical shows that tripling \([C]\) leaves the initial rate unchanged. Determine the order with respect to C. 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.