| Date | November 2009 | Marks available | 1 | Reference code | 09N.1.hl.TZ0.1 |
| Level | HL | Paper | 1 | Time zone | TZ0 |
| Command term | Determine | Question number | 1 | Adapted from | N/A |
Question
Which coefficients would balance this equation?
__ \({\text{Mn}}{{\text{O}}_2} + \) __ \({\text{HCl}} \to \) __ \({\text{MnC}}{{\text{l}}_2} + \) __ \({\text{C}}{{\text{l}}_2} + \) __ \({{\text{H}}_2}{\text{O}}\)
Markscheme
C
Examiners report
In spite of a concern on the part of one teacher that this question was too difficult, this was one of the questions that students found easiest, with a Difficulty Index of 94%; hence it provided a nice easy start to settle students into the paper.
Syllabus sections
Core » Topic 1: Stoichiometric relationships » 1.1 Introduction to the particulate nature of matter and chemical change
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