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To determine the enthalpy of reaction.
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Lewisham College Zahra Hussien As chemistry Assessor: Bernice Ferdinand Science investigation for OCR coursework As chemistry Title To determine the enthalpy of reaction Introduction The enthalpy change of reaction is the enthalpy change when amount of reactants react together under standard conditions to give products in their standard states. The heat change might be exothermic or endothermic. Exothermic reactions: Heat flows from the system to the surroundings. The value will be negative. Endothermic reactions: Heat flows from the surroundings into the system. The value will be positive. Aim The purpose of this experiment is to determine the enthalpy of the reaction for a displacement reaction: * CaCo3(s) + 2HCl(aq)? CaCl2(aq) + Co2(ga) + H2O(l) * CaO(s) + 2HCl(aq) ? CaCl2(aq) + H2O(l) By adding 2 mol/dm3 of HCl to a CaCo3 and CaO, and measure the temperature changes and calculates the enthalpy change for the reaction. Prediction I predict from the experiment I am going to do, I expect the reaction is going to be exothermic...
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