Wjec alevel chemistry analysis

Did the wjec alevel chemistry analysis paper today… how did everyone find it?

It was objectively hard. Most questions should have been manageable given sufficient revision. Didn’t know the answer to the penultimate question though. I was running out of time and guessed that some NH4Cl from the organic solvent dissolved in the water and made a basic buffer with the NH3(aq), hence preventing titration. Also, what was up with the figures obtained from the graph for proving that the reaction was first order. When calculating the rate of the reaction with half the conc. of reactant, it was between being half and a quarter of (the rate)!