Hmm it was... 20.1cm^3 0.02moldm^-3 KMnO4 was needed to complete 20cm^3 of 6g of tablet made into 200/250cm^3 of solution.
The equation was a 1:5 ratio of KMnO4-Fe(II)?
Anyone care to have a go...
I actually think my answer was 37.2...rounded up to 37.3 so it could be i had half the actual answer, or something.
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For the AB rate determining step question what did you put?
I put SN1 and put that the rate determining step depended on the conc of B. But that doesn't sound good to me, as the orders were 1 and 2(?) and SN1 involves 1 and 0. But it couldn't be sN2 as that doens't havea rate determining step and i couldn't think of any other relevant mechanisms.
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And the bit about reactivity of the acid chloride, what did people put there?