Rate of Reaction between CaC03 and HCL

... ime it would have taken would be more than should be. If it were compared to the smaller chips the time would be less because of it having a smaller surface area for the reaction to act on. The Hydrochloric acid cannot be used again after the reaction otherwise the acid will be less strong to act on the marble chips.

When I am reading the syringe for results I need to be accurate in the amount I have observed because it could affect my results.

On each experiment at different temperatures I have to make sure the amount of marble chips and acid are the same each time to help me in getting the best results possible.

Equipment

· Gas syringe

· Bunsen Burner

· Tripod

· Conical Flask

· Gauze

· Measuring Cylinder

· 2 Clamps

· 2 Stands

· Stop clock

· Fireproof Mat

· Thermometer

· Beaker

· Boiling Tube

· Calcium Carbonate (marble Chips 3 grams)

· Hydrochloric acid (20ml)

· Water (250)

· Goggles

· Weighing Scales.

Diagram Of Equipment Used.

Method

First of all I am going to test the rate of reactivity of the calcium carbonate (marble chips) at room temperature (25°c, this is because it was a heated room and the acid had been in their all day). I measured 3grams of marble chips and added them into a conical flask and 20ml of hydrochloric acid into a measuring cylinder. I added the acid into the conical flask with the marble chips and started the stop clock away. After 10 seconds and every 10 seconds I measured the amount of gas in the syringe until 70 seconds had gone by at which point I will measure the temperature of the hydrochloric acid. After each time I will throw away the marble chips because they cannot be used again as some reactant will have been used up. To get the best possible results I am going to test it 3 separate times to enable me to judge the amounts of gas produced fairly and decide if they are correct. After doing it 3 try's I will continue until the temperature reaches 60°c, on each of these tempe ...