1. calcium carbonate (marble) hydrochloric acid carbon dioxide

2. After completing this topic you should be able to : Relative rate for a reaction is the reciprocal of the time taken for the reaction. Calculating relative rate from raw experimental data Units for relative rate are s -1 Investigate the effect of temperature on the rate of reaction between oxalic acid and potassium permanganate.

3. Rate measurement and temperature. Oxalic acid/permanganate reaction 5(COOH) 2 (aq) + 6H + (aa) + 2MnO 4 2- (aq)  2Mn 2+ (aq) + 10 CO 2 (aq) 8H 2 O (l) State the; Aim of the experiment. Method, which variables to control and change. What to measure and how. How to record your results. What graph to draw. Make a conclusion. Evaluate. What colour change takes place?