Rate of reaction. Reaction of chalk with hydrochloric acid is used to demonstrate that the rate of reaction depends on concentration. Chalk is calcium carbonate,it reacts with hydrochloric acid to produce carbon dioxide bubbles: CaCO3 + HCl -> CaCl2 + H2O + CO2. This is an example of a double displacement reaction. HCl concentration is 0.1 M in left panel and is 1 M in right panel. The reaction rate is higher for higher HCl concentration | |
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Crédit: | Science Photo Library / Giphotostock |
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