| Date | May 2018 | Marks available | 1 | Reference code | 18M.1.sl.TZ2.1 |
| Level | SL | Paper | 1 | Time zone | TZ2 |
| Command term | Apply | Question number | 1 | Adapted from | N/A |
Question
What is the sum of the coefficients when the equation is balanced with the lowest whole number ratio?
__Na2S2O3(aq) + __HCl(aq) → __S(s) + __SO2(g) + __NaCl(aq) + __H2O(l)
A. 6
B. 7
C. 8
D. 9
Markscheme
C
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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