Feedback for Chem Exam 4
There were 8 participants.
The raw average was 32.2/50. This is the highest average so far. No scores below 10.
The highest mark was 41… Great effort.
The toughest questions were:
Q1: Tricky bromine water experiment question (0% got this)
Q23: Sources of NOx (12.5% got this)
Q27: Acid-base theories explaining conjugate acid/bases (12.5% got this)
Q29: Conjugate base pH of HCl (12.5% got this)
Q31: Tricky titration question (25% got this)
Q47: Tricky AAS mol to ppm question (25% got this).
Question 1 is probably a little ambiguous and I will probably change it (though this is similar to a question I saw in a school trial paper).
There was also a calculation error in Q38 which is now fixed... Thank you for pointing it out babberz.
Thanks very much to all who attempted an exam.
PM me if you have any questions/feedback or want more info on your results.
I will give feedback on Exam 5 on Tuesday... give it a go if you haven't already.
Not long to go now.... Goodluck!
