This is a question from the assessment materials AQA released today - I can't find the mark scheme and I can't work out the answer, so any help would be appreciated!
A solution that contains 605 mg of NaHSO4 in 100 cm3 of solution has a pH of 1.72 Calculate the value of Ka for the hydrogensulfate ion (HSO4 −) that is behaving as a weak acid
Give your answer to three significant figures.
weak acid.
State the units of Ka
I got 0.0720, but I think this is wrong.