Answer to Question #145700 in General Chemistry for Clemen

Question

When cement powder is added to water a reaction takes place. Describe an experiment to show that this reaction is exothermic.

Answer 1

AIM OF EXPERIMENT:

To show that Adding of cement to water is exothermic

MATERIALS NEEDED:

Small amount of cement powder, 1/4 litre of distilled water,beaker,thermometer.

PROCEDURE:

1)Pour the distilled water into the beaker

2)Then place the thermometer inside the water then take down the temperature value.

3)Leave the thermometer inside the water after taking down the temperature

4)Then gently add the cement powder into the water

5)Watch the rise in temperature the thermometer gives

6)Then take down the final temperature(where the thermometer stops reading)

OBSERVATION:

As the cement is added to the water and is dissolving,there is an increase of about 2-4(°C) in the temperature given by the thermometer which manifests as the beaker gets warmer.

CONCLUSION:

Since there is an increase in the temperature of the solution, then it can be concluded that the addition of cement to water is an exothermic reaction.