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Aim
I plan to investigate the effect of concentration of acid, in the reaction between dilute hydrochloric acid and magnesium ribbon. ... Some reactions are very fast, for example; the formation of silver chloride precipitates when silver nitrate and hydrochloric acid solutions are mixed. In this investigation I will test different concentrations of acid reacting with magnesium.
Prediction
My prediction is that as the concentration of the hydrochloric acid increases, the time taken for the magnesium to disappear decreases. ...
The collision theory describes how the rate of reaction increases (the time taken for the magnesium ribbon to disappear when it is reacted with hydrochloric acid) when the concentration of HCL increases. ... The higher the concentration of HCL you use, the less time it takes for the magnesium to disappear and so the rate reaction increases. ...
Apparatus
Hydrochloric acid(3 mole)
Water(to dilute acid)
10ml testube
magnesium(2cm long)
stop clock(sensitivity 1/10s)
beaker
Method
To get the amount of magnesium and the amount of hydrochloric acid to use in the situation, we have to use an excess of acid so that all of the magnesium disappears.
An equation for the reaction:
Magnesium + hydrochloric acid >magnesium chloride + hydrogen
Mg(s) + 2HCL(aq)>Mgcl2(aq) + H2(g)
1mole 2moles 1mole 1mole
So we can say that one mole of magnesium reacts with 2 moles of hydrochloric acid.
Approximate Word count = 1014
Approximate Pages = 4.1
(250 words per page double spaced)
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