Marble chip investigation - rates of reaction, studying the effects of change in concentration of the acid

Marble Chip Investigation

Method

1.Set up the equipment as diagram shows. The standard cylinder must be filled with piddle supply and then invert into the tub.

2.Measure the quantity of hydrochloric acid and marble chips to the decided amount. Add water to the acid to change the concentration to what you need.

3.Take note of the amount of water in the measuring cylinder.

4.Put the marble chips and hydrochloric acid into the conical flask. set back the bung and start the stopwatch.

5.Once the decided amount of time has passed, construct note of the remaining amount of water in the measuring cylinder. Subtract this number from the one noted down in step three, this is the volume of gas produced.

6.Repeat experiment with at to the lowest degree 5 different concentrations of acid.

Equipment

·Marble chips

·Hydrochloric acid

·Measuring cylinder

·Conical flask

· topple and deli re ally tube

·Clamp stand

·Boss head clamp

·Tub

·Stopwatch

Safety

Hydrochloric acid is very corrosive, so care allow for be taken when treatment it. Safety goggles will be worn passim the investigation as the reaction could fizz violently and typesetters case eye damage if it was to spit.

Variables

·Temperature

·Concentration of acid

·Surface area of marble chips

·Mass of marble chips

·Volume of acid

Key Variable

The only variable that I will intentionally change during the investigation will be the concentration of acid. I will do my best to economize the other variables constant.

Measurements

After carrying out the preliminary tests, the measurement I will be using are:

·100cm3 of each acid concentration

·6g of marble chips

The concentrations of acid that I will use will be:

·2M

·1.6M

·1.2M

·0.8M

·0.4M

Fair Test

To make it a fair test and make my results much accurate I will try and keep all variables constant except the concentration of the acid. This will...

Its good, got preliminary, everything. Its all labled clearly, good explanaition, definately an A at GCSe standards.. maybe an intro added would be bettter, stating rates of reaction.

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