Question 1
The graph shows the concentrations in a sealed vessel of fixed volume holding N₂O₄(g) ⇌ 2NO₂(g), ΔH = +57 kJ mol⁻¹. What change was made at 10 minutes?
HSC Chemistry Section I multiple choice
Twenty marks of multiple choice across all four modules. Read every option before you choose: the wrong ones are built from common slips.
| Marks | 20 |
|---|---|
| Options | Four, one best answer |
| Our papers | Two timed 20-question Section I papers |
What the questions test
- Concepts from Modules 5 to 8, often in a short scenario.
- Calculations: Keq, Ksp, pH, titrations and analysis results, with the options built from common slips.
- Reading data: a table, a graph, a titration curve or a spectrum.
Try 2 questions
Question 2
What is the IUPAC name of the alkane with the condensed structural formula CH₃CH₂CH(CH₃)CH₂CH₃?
Next step
Questions people ask
How long should I spend on Section I?
About the share of the time its marks deserve: Section I is a fifth of the marks, so roughly 35 minutes of the 3 hours, less if you are quick.