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My teacher says that there is some titration performance and we will be provided with a mixture of calcium carbonate and potassium chloride! they have also asked for a crucible, but what will we be doing with the crucible because the mixture isn't decomposing. please ask ur teacher or search that at which temp does it decompose or how much time it must take. we couldnt work out any experiment!
Calcium carbonate does decompose. There will be a loss in mass due to release in CO2.
(Note that this is not an clue to the experiment, I have no idea what it is.)