| Date | May 2011 | Marks available | 1 | Reference code | 11M.1.sl.TZ1.1 |
| Level | SL | Paper | 1 | Time zone | TZ1 |
| Command term | Determine | Question number | 1 | Adapted from | N/A |
Question
What is the sum of all coefficients when the following equation is balanced using the smallest possible whole numbers?
__ \({{\text{C}}_{\text{2}}}{{\text{H}}_{\text{2}}} + \) __ \({{\text{O}}_{\text{2}}} \to \) __ \({\text{C}}{{\text{O}}_{\text{2}}} + \) __ \({{\text{H}}_{\text{2}}}{\text{O}}\)
A. 5
B. 7
C. 11
D. 13
Markscheme
D
Examiners report
[N/A]
Syllabus sections
Core » Topic 1: Stoichiometric relationships » 1.1 Introduction to the particulate nature of matter and chemical change
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