temperatures because the reaction is going quicker and so more H2 is given off
in that amount of time.
There is more H2 given off if you compare it to the range of concentrations
that you are using, this shows that the reaction is at different stages and so
is therefore producing different amounts of H2.
Also our results were not accurate but this could be because of a number of
reasons.
There our many reasons why our results did not prove this point accurately. -
At high temperatures the acid around the magnesium starts to starts to dilute
quickly, so if you do not swirl the reaction the magnesium would be reacting
with the acid at a lower concentration which would alter the results. – Heating
the acid might allow H Cl to be given off, therefore also making the acid more
dilute which would also affect the results. – When the reaction takes place
bubbles of H2 are given off which might stay around the magnesium which
therefore reduces the surface area of the magnesium and so the acid can not
react properly with it so this affects the results.
To get more accurate results, we could have heated the acid to a lower
temperature to stop a large amount of H Cl being given off. The other main
thing that could have helped us to get more accurate results is we cold have
swirled the reaction throughout it to stop the diluting of the acid and the
bubbles of H2 being given off.
If I had time I could have done the reactions a few more times to get a better
set of results. This would have helped my graphs to show better readings.