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An investigation into how changing one variable influences the rate of reaction between marble chips and dilute hydrochloric acid.
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Chemistry coursework Planning Section This experiment is an investigation into how changing one variable influences the rate of reaction between marble chips and dilute hydrochloric acid. When dilute hydrochloric acid reacts with marble chips the following reaction occurs: CaCO3 + 2HCl = CaCl2 + H2O + CO2 List of variables which could affect the rate. * Surface area: The bigger the surface area of the marble chips means that there will be more CaCO3 particles which means there will be a higher rate of reaction because there is a higher possibility of acid particles hitting the marble chips. * Temperature: The higher the temperature the bigger the reaction takes will be when the temperature is higher the acid particles have more energy which means they hit the marble chips harder, therefore the reaction takes place faster. * Concentration: The higher the concentration of Hydrochloric acid the higher the rate of reaction will be because there are more acid...
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