| Date | May 2013 | Marks available | 1 | Reference code | 13M.1.sl.TZ1.22 |
| Level | SL | Paper | 1 | Time zone | TZ1 |
| Command term | Deduce | Question number | 22 | Adapted from | N/A |
Question
A solution of acid HX has a pH = 1 and a solution of acid HY has a pH = 3. Which statement must be correct?
A. HX is a stronger acid than HY.
B. HY is a stronger acid than HX.
C. The \({\text{[}}{{\text{H}}^ + }{\text{]}}\) in the solution of HX is 100 times greater than the \({\text{[}}{{\text{H}}^ + }{\text{]}}\) in the solution of HY.
D. The \({\text{[}}{{\text{H}}^ + }{\text{]}}\) in the solution of HY is 100 times greater than the \({\text{[}}{{\text{H}}^ + }{\text{]}}\) in the solution of HX.
Markscheme
C
Examiners report
[N/A]
