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Hi all, I was just wondering whether those integrals that result in a log would need to be memorised? or will they have to state it in a question for us to use? Also, is there any easy way of deriving the formula or so?

It's from Total Education Centre Trial 2020, could you explain what the correct answer is? Is it Bromthymol Blue?

hmmm would there be no such case that this occurs? like maybe it’s done at a specific temperature that affects Ka and Kb, if i were in an exam assuming they provided a graph such as that i should be reading equivalence point and thus determining the equivalence point from there and not just...

I don't understand the answer, if the equivalence point is 6.5 shouldn't bromthymol blue be used?

So I am allowed to learn stuff that is not taught ie 3u methods; u-sub and auxillary to use in the 2U exam as a 2U student? Just clarifying I felt like I worded the original post poorly.

am i allowed to use 3u methods in a 2u exam as a 2u student when my teacher hasn't taught me it (cause im 2u only)? i feel like some methods are actually easier for example to name a few U-sub for integration and auxiliary angles? and also are 3u students allowed to use 3u methods in 2u exams...