| Date | November 2010 | Marks available | 1 | Reference code | 10N.1.hl.TZ0.27 |
| Level | HL | Paper | 1 | Time zone | TZ0 |
| Command term | Question number | 27 | Adapted from | N/A |
Question
Which solutions have a pH less than 7?
I. \({\text{N}}{{\text{a}}_2}{\text{C}}{{\text{O}}_3}({\text{aq)}}\)
II. \({\text{[Fe(}}{{\text{H}}_2}{\text{O}}{{\text{)}}_6}{\text{]C}}{{\text{l}}_3}{\text{(aq)}}\)
III. \({{\text{(N}}{{\text{H}}_4}{\text{)}}_2}{\text{S}}{{\text{O}}_4}{\text{(aq)}}\)
A. I and II only
B. I and III only
C. II and III only
D. I, II and III
Markscheme
C
Examiners report
[N/A]
Syllabus sections
Additional higher level (AHL) » Topic 13: The periodic table—the transition metals » 13.1 First-row d-block elements
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