HSC Chemistry Multiple-Choice Quiz

Try 4 original practice questions. Choose an answer for each question to see your score and the explanations.

1. At equilibrium in a closed system, which statement describes the forward and reverse reactions? The reactant and product concentrations must be equal The reverse reaction occurs only after a disturbance Both reactions have stopped They occur at the same rate

2. What is the pH of a solution with hydrogen ion concentration 1.0 × 10⁻³ mol/L? 3.0 1.0 2.0 11.0

3. Which change describes oxidation in a redox reaction? Loss of electrons Gain of electrons Gain of protons in the nucleus Loss of neutrons

4. A 0.200 mol/L solution is diluted by adding water to 25.0 mL of it until the total volume is 100.0 mL. What is the new concentration? 0.0500 mol/L 0.200 mol/L 0.100 mol/L 0.800 mol/L

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