Investigating Factors that Alter the Rate of Reaction

Investigating Factors that Alter the Rate of Reaction

Aim,

To investigate the factors which alter the rate of the reaction.

Planning,

In our experiment we will measure the rate of reaction by taking the

weight of the solution every ten seconds. This may be altered as we

finalise our plans. This method will give us lots of results; this

will keep the accuracy of the investigation.

We would like to repeat the experiment, this time measuring the rate

by measuring the volume of gas given off during a period of time. This

will provide lots of useful readings. But because the gas cylinder can

only hold, up to 100cc of gas. This may affect the accuracy of the

results.

Fair Test,

During the experiment the temperature of the solution will be altered

but we will keep the following points the same…

* …thermometer ,

* …amount of hydrochloric acid,

* …amount of limestone,

* …strength of acid,

* …sized pieces of limestone,

* …environment in which the experiment the undertaken.

Prediction,

I predict the experiment where we change the temperature of the

solution, will react the fastest, because the particles are moving

faster and will have greater effect on the limestone. Where as the

concentration of acid experiment, there maybe more acid particles, but

they are not moving around as fast and therefore not having as big

reaction. As we increase the factor the rate will increase. I predict

that if we double the temperature of the solution the rate of reaction

doubles as well.

Diagram,

Method,

For the temperature experiment we will;

* Weigh the beaker.

* Then heat 20cc of hydrochloric acid to the desired temperature.

* Then add 5grams of calcium carbonate (limestone)

* Put on the scales and note the weight of the beaker and solution

per minute.