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Experiment: To investigate the effect of Concentration of Acid Introduction The acid that we use in this experiment is Hydrochloric Acid. The alkali we are going to use is Sodium Hydroxide. A neutralisation reaction is the process in which the acidity or alkalinity of a substance is destroyed. Destroying acidity means removing the H+ (aq) ions by reaction with a carbonate metal or a base. Destroying alkalinity means removing the OH- (aq) ions by reaction with an acid. The acid and alkali particles must be in exactly equal amounts to get a perfectly neutral solution. If a bond is broken, energy is needed and the reaction is endothermic. However if a reaction is exothermic, it is a recombination, which is bond making. Through this, energy is produced. Neutralisation: acid + alkali salt + water Neutralisation is an exothermic reaction. This means it gives out energy to the surroundings in the form of heat....

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