Hydrochloric Acid and Marble Chips Experiment

Topics: Water, Hydrogen, PH Pages: 2 (517 words) Published: May 8, 2013
The higher the concentration of hydrochloric acid, the faster the reaction will take place because there will be more hydrochloric acid particles to collide with the marble chip particles therefore resulting in a quicker reaction. The lower the concentration, the weaker the reaction will be as there will be fewer particles so less chance of a collision and a lower rate of reaction.

Conical flask – to hold the hydrochloric acid and marble chips Boiling tube – to hold and indicate whether or not carbon dioxide has been formed Delivery tube – to allow the gases to be passed through

Bowl of water – to contain the water
Hydrochloric acid – to react with the marble chips – independent variable Marble chips – to react with the acid – dependent variable Stopwatch – to accurately time the experiment
Spatula – to handle the marble chips
Measuring cylinder – to precisely measure out different concentrations of hydryochloric acid Electric balance – to measure the mass (g) of the marble chips Bung – to stop the gas from escaping
Weighing boat – to hold the marble chips in when weighing

I will change the different concentrations of hydrochloric acid to produce a wide range of results as we are testing the effect of concentration on the rate of reaction. I will keep the mass of the marble chips for each concentration the same to ensure it is a fair test. I will keep the volume of the hydrochloric acid the same.

When handling the hydrochloric acid you should always wear goggles in order to protect your eyes because the acid is corrosive.

If the hydrochloric acid touches your skin rinse with water straight away.

If a spillage occurs during the experiment you should clean it up straight away using a paper towel because it is a safety risk to others as well as yourself.

If the conical flask or boiling tube breaks then you need to inform your teacher straight away. By doing this it will also prevent you or...
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