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Find the Concentration of the Unknown Acid. Aim The aim of my investigation is to find the concentration of the unknown acid, 'x'. I have been supplied with hydrochloric acid that has a concentration of 2 mol/dm³ and a length of magnesium ribbon. I will time the rate of reaction of a strip of magnesium in the unknown concentration and then do the same using acid of known concentrations. By putting these results onto a graph I should be able to notice any rates of reaction that match up with each other and therefore find the concentration of 'x'. During this experiment there are many variables that I could change. These are: Temperature - I could change the temperature of the acid by putting it in a water bath to increase the temperature or by running it under a cold tap to decrease the temperature. Volume - I could change the volume of...

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