Q7 · 2020 · Paper 1Unclassified1 mark
QUESTION 7
Analyse the experimental data to determine the relative strength of the acids from strongest to weakest.
(A) H,SO, > H;PO, > HCN > CH,;,COOH
(B) H,SO,> HPO, > CH,COOH > HCN
(C) HCN >CH;COOH > H2SO, > H3PO,
(D) HCN > CH;COOH > H;PO, > H,SO,
WORKED SOLUTION
1 markAnswer B
OFFICIAL ANSWERB
QCAA awards 1 mark for selecting option B.
Correct option from the official QCAA answer key.