Chemistry paper 2: the rate and extent of chemical change practical (rate of reaction).

Investigate how changes in concentration affect the rates of reactions by methods involving the production of gas or a colour change.

Method:

1. Set up the equipment as follows; place a beaker on top of a piece of paper with a cross drawn on it. In this beaker, sodium thiosulfate must be placed inside, dilute hydrocholoric acid will need to be added in…