Carbonate Ores Experiment.


You can find out the amount of carbonate in an ore sample by adding hydrochloric acid to the sample and measuring how long it it takes to stop fizzing.


The equipment you will need is:

    • 100 ml beaker
    • Samples containing  different amounts of copper carbonate ores
    • 25ml Measuring cylinder
    • Stopwatch
    • 2M hydrochloric acid
    • Spatula
    • Scales

The method:

First put two spatulas or 5 grams of an ore sample into the beaker.

Next measure 25ml of dilute hydrochloric acid using the measuring cylinder.

Then you can carefully pour the  hydrochloric acid into the beaker and start the stopwatch. Swirl the beaker once to mix the carbonate ore and the acid together.

When the fizzing stops, stop the stopwatch, to measure the time taken for the fizzing to stop and record this result in the table.

Repeat for the other samples.


 Risk Assessment Issues:

There are some risks associated with this experiment

Hydrochloric acid is corrosive and can damage eyes and skin, therefore safety goggles must be worn and any spills must be cleaned up immediately.

Glass equipment can easily break, make sure you take care and clean up any broken glass in the correct way.