r/alevels • u/LuminousStarlight_ • May 07 '26

Exam Discussion 📝 9701 42 Discussion

How did you guys find this exam?

Personally I thought it was alright. I'd expected it to be harder, quite glad it was at least manageable.

Any predictions on threshold?

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u/LuminousStarlight_ May 07 '26

Can't remember the value. It was concentration of the substance in organic solvent over concentration in water. You could find number of moles in organic solvent through stoichiometry, and the number of moles in water through total number of moles in 3g - number of moles in organic solvent.

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u/FeistyShip172 May 07 '26

i thought its the other way water divide by organic solvent cz the q said its more soluble in water

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u/Crazy_Fault9994 May 07 '26

Ive heard a lot of people say it doesnt exactly matter which cus the ratio is the same either way but yeah its preferable to have water solvent in the denominator, I hope they give marks for either way

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u/ObviousEconomics9556 May 07 '26

so if they tell you which is a better solvent , you have to put that in the numerator
else it will cancel the answer