Effect Of Temperature On Rate Of Reaction

Effect Of Temperature On Rate Of Reaction

PLAN:

In this investigation I will find out the effect of temperature on

rate of reaction. To do this I will put a piece of paper with an "X"

marked on it under a chronicle flask and carry out the reaction of

with Hydrochloric Acid with the concentration of 2M and Sodium

Thiosulphate solution and observe how long it takes for the reaction

to finish. I will repeat this with different temperatures.

Apparatus:

* Timer

* 50g dm-3 Sodium Thiosulphate solution (Na2S2O3)

* 2M Hydrochloric Acid

* Conical flask

* Thermometer

* Bunsen burner

* Heat proof mat

* Wire gauze

* White tile

* Filter paper

* A pair of Tongs

Diagram:

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Method:

1) Set up all the apparatus needed (as shown on the previous page)

e.g. measuring cylinder, timer etc. Put a piece of paper with an "X"

marked on it under the conical flask.

.

2) Measure out 40cm3 of water, 10cm3 of Sodium Thiosulphate solution,

and 5cm3 of Hydrochloric Acid

3) Pour the water and in the conical flask, (this ensures that the

Sodium Thiosulphate solution is the right concentration).

4) Measure the temperature of the solution in the conical flask.

5) Then pour the Hydrochloric acid in the conical flask and start the

timer.

6) Look from the top of the conical flask and wait for the "X" on the

paper under the conical flask to disappear, once it has disappeared

stop the timer and note the time it for the reaction to finish.

Repeat this experiment but change the temperature of the mixture of

water and Thiosulphate solution before pouring in the acid.

NOTE:

Make sure that you check the temperature before your pour the

Hydrochloric acid in the conical flask; heating the solution to 50Ëš C