I am planning to do an experiment to investigate how varying concentration affects the rate of reaction.

Authors Avatar

Course Work (1) Rates of Reaction

Planning

I am planning to do an experiment to investigate how varying concentration affects the rate of reaction.

I intend to do this by collecting the following equipment, stop clock, safety goggles, apron, conical flask, paper with a cross on it, thermometer and chemicals sodium thiosulphate and hydrochloric acid.

-Then I will wear the safety equipment and measure 50ml of sodium thiosulphate and 5ml of hydrochloric acid (in a different measuring cylinder).

-Then I am going to mix the chemicals in a conical flask that is on top of the paper. I will time how long it takes to make the cross disappear.

-I will repeat the above steps, 3 times for 5 different concentrations, recording both concentration and time for each one.

I think that the higher concentrations will do the reaction more quickly than the lower concentrations.

This is because I know that the higher concentrations have got more ‘parts’ in them to hit together and react.


Investigating Rates of Reaction

Aim: I am going to do an experiment to investigate how increasing and decreasing concentration differs the rate of reaction when the two chemicals being reacted are sodium thiosulphate and hydrochloric acid. The control of the two chemicals is hydrochloric acid.

Background: The four main factors affecting the rates of reaction in any experiment are:

  1. Concentration i.e. in this experiment the concentration of sodium thiosulphate
Join now!

  1. Surface area

  1. Temperature (in my experiment the temperature will be at room temperature).

  1. Catalysts

  1. Concentration; this is the volume of a particular thin in another e.g. 1 tea spoon of sugar in 200ml of tea or 2 tea spoons of sugar in 400ml of tea these two have the same concentration of sugar. For a higher concentration of sugar you could have 2 teaspoons of sugar in 200ml of tea etc…

  1. Surface area; increasing the surface area will increase the rate of ...

This is a preview of the whole essay