Our aim is too see how the solubility of a solute changes when temperature has been changed.

Authors Avatar

DISSOLVING ASSESSMENT

AIM

Our aim is too see how the solubility of a solute changes when temperature has been changed.

EQUIPEMENT

The equipment we will be using is a test-tube, a spatula, a bun, a water bath, a thermometer, a measuring cylinder, and obviously we will need the solute and water to carry out the experiment.

PLAN

Our aim is to see how many spatulas of a solute it will take to put in water to make it a saturated solution. Our solute will be potassium chloride.

The plan is to firstly get all the equipment listed above, once we have done this we can start our experiment. We first of all have to measure out 7.5ml of water in a measuring cylinder; the water then goes straight into a test-tube. Once this is done we have to change the temperature, either to 10oc, 20oc, 30oc, 40oc, or 50oc. When the water is the right temperature we can start to add the spatulas in. The method was to put one spatula of potassium chloride, which was about 0.37g, in the test-tube, with the water, and than put the bun on top and shake it for about ten or fifteen seconds, you will than stop and add another spatula of potassium chloride in, this goes on until the solvent wont dissolve the solute anymore, this is a saturated solution. After you have made the saturated solution you record the amount of spatulas it took to make the water saturated, then you do the same but with a different temperature.

Join now!

The whole experiment will be done twice, a preliminary experiment and a secondary experiment.

Our preliminary experiment will be very rough, no one will measure how much, of the substance they will be using, to put in the test-tube.

Hardly anyone will keep the same temperature all the way through the test.

So the preliminary experiment will not be a fair test at all and this is why we will probably have a lot of anomalous results.

Than we will do the experiment a second time but this time we will be measuring the amount of water put in, ...

This is a preview of the whole essay