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Urgent help please..rate constants! Ahhh!

Hi,
I have done an A2 investigation between magnesium and hydrochloric, sulphuric and ethanoic acid and need to work out the rate constants and then the arrhenius equation.
I did different concentrations of each acid so got a different rate for each concentration so am I going to have several rate constants?
If I have help for one acid, I can work out the rest myself :smile:
For ethanoic acid I got:
Concentration Rate
2.4 0.4
2.1 0.325
1.8 0.238
1.5 0.163
1.2 0.1
I worked out the order for the reaction is second order.
I really am stuck so could do with some help please!
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Avatar for shengoc
shengoc
12
sophia27
Hi,
I have done an A2 investigation between magnesium and hydrochloric, sulphuric and ethanoic acid and need to work out the rate constants and then the arrhenius equation.
I did different concentrations of each acid so got a different rate for each concentration so am I going to have several rate constants?
If I have help for one acid, I can work out the rest myself :smile:
For ethanoic acid I got:
Concentration Rate
2.4 0.4
2.1 0.325
1.8 0.238
1.5 0.163
1.2 0.1
I worked out the order for the reaction is second order.
I really am stuck so could do with some help please!


If you could find out that it is second order wrt ethanoic acid, you could do the same for HCl and H2SO4, can't you? ie same method. what do you need help with then? does that mean you know it is second order but don't know how to get it from your results?

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