Equilibrium and Acid Reactions
CHE-M5 is worth about 24 marks out of 100 in recent HSC Chemistry papers. Practise 21 exam-style questions (numerical answer, multi-part, multiple choice, short answer) with instant marking and a worked solution for every question.
START PRACTISINGExample questions
Example 1 · 1 mark · multiple choice
What is the effect of adding a catalyst to a system at equilibrium?
- AK increases
- BEquilibrium is reached faster, but the position and K are unchanged
- CThe activation energy of only the forward reaction decreases
- DThe equilibrium shifts towards the products
Example 2 · 2 marks · numerical answer
For the reaction , the equilibrium concentrations at a certain temperature are mol L⁻¹, mol L⁻¹ and mol L⁻¹. Calculate , correct to three significant figures.
Example 3 · 3 marks · multi-part
1.00 mol of and 1.00 mol of are placed in a sealed 2.00 L vessel. At equilibrium, 1.56 mol of HI is present.
Answers and worked solutions appear when you practise these questions.