NCEA Level 2 Chemistry: rates of reaction, strong and weak acids
Rate of reaction Research project
For a detailed look at how this practical is carried out visit this link in the blog
When a gas is given off during a chemical reaction the rate can be measured by weight loss on a pan balance.
Decide how you will compare the rates of reaction between 2.0 and 1.0 mole per litre hydrochloric acid with marble chips. Compare rates of reaction between 2.0 moles per litre hydrochloric and ethanoic acids with marble chips.
species in solution
observed rates of reaction
total mass of carbon dioxide released (starting with the same amount of acid)
the strengths of the acids and equilibrium concentrations
the pH of both acids at different concentrations
As a follow up to your research track the pH changes that occur during these reactions and discuss.