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An Investigation into the Heat of Neutralisation Planning: Aim: the aim of this investigation is to look at what effect concentration has on the temperature and energy changes in a neutralisation reaction. Introduction: Neutralisation occurs when an acid and an alkali base are reacted together to form a neutral solution. Despite this, a neutral solution will only be achieved if the alkali and acid are of equal strength. This occurs because the H+ ion in the acid reacts with the OH¯ ion in the alkali to form H20 or water, which is neutral. The H+ ions are destroyed when they are reacted with a carbonate or metal base. The OH¯ ions are destroyed when they are reacted with an acid. The equation for this is shown as follows: H+ + OH¯ H20 However alkalis and acids all differ because of their structure. This means that as well as water being produced, so is a salt. Acid + Alkali Salt + Water XH+ + YOH¯ XY + H20 HCl + NaOH NaCl + H20 Neutralisation...

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