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When an acid reacts with an alkali the products it makes are a salt and water. This is known as the
neutralisation reaction. Most neutralisation reactions are exothermic and can be written like so:
Here Y and X represent a monovalent cation and anion
respectively. The OH splits apart from the alkali, the H also splits apart from the acid, both of these
actions uses a small amount of heat energy.…read more

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For my investigation I will be studying the effects of different molarities of acids and bases on the
energy given out in a reaction. I choose to study this factor over others for a number of reasons; firstly it
will be the easiest, out of all the factors that I have considered, to measure. Changing the molarity of
an acid and a base is very simple as all you have to do is add distilled water in order to decrease the
molarity.…read more

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By using distilled I will be able to avoid side reactions
and contamination of my reactants and if there is an unexpected result in my data I will be able
to know that it s directly linked to my experiment and not something in the water that could have
influenced the unexpected result.
Thermometer ­ I will be using a thermometer in my experiment in order to measure the starting
temperatures and the peak temperatures of my reactions.…read more

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Corrosion or irritation of Hydrochloric acid ­ it is a Take care when handling the
skin corrosive acid that can corrode hydrochloric acid, try not to spill it. Do
or irritate skin if left untreated not run with the hydrochloric acid and
follow general lab rules to ensure
safety. If any is spilled onto desk,
remove immediately and wash desk. If
any gets onto the skin, wash skin
immediately with water and seek
medical help if necessary. Always wash
hands after handling hydrochloric acid.…read more

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From our preliminary experiment we decided to keep the total volume of the solution constant and to
dilute the acid with distilled water in order to make sure that the volume of the solution was constant.
This would make our results more reliable as the heat energy that would be released during the
reaction would have to spread out over the same volume of water in each experiment. This would
therefore make our results comparable to each other and more reliable.…read more


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