TCE Chemistry Level 4 (CHM415115): mixed exam-style practice quiz

Criterion 5. The oxidation state of sulfur in sulfuric acid, $\text{H}_2\text{SO}_4$, is:

Criterion 5. A galvanic cell uses $\text{Cu}|\text{Cu}^{2+}$ ($E° = +0.34$ V) and $\text{Ag}|\text{Ag}^+$ ($E° = +0.80$ V). Which statement is correct under standard conditions?

Criterion 5. Impure copper is refined by electrolysis in copper(II) sulfate solution, with the impure copper as one electrode and a pure copper sheet as the other. Which statement is correct?

Criterion 6. Given $\text{C} + \text{O}_2 \rightarrow \text{CO}_2$, $\Delta H = -394$ kJ, and $\text{CO} + \tfrac{1}{2}\text{O}_2 \rightarrow \text{CO}_2$, $\Delta H = -283$ kJ, the enthalpy change for $\text{C} + \tfrac{1}{2}\text{O}_2 \rightarrow \text{CO}$ is:

Criterion 6. For an endothermic reaction at equilibrium, the temperature is increased. Which statement is correct?

Criterion 6. For a reaction at a given temperature, Kc = 4.0. A mixture is prepared with a reaction quotient Q = 12. What happens?

Criterion 6. The pH of 0.10 mol L$^{-1}$ ethanoic acid ($K_a = 1.8 \times 10^{-5}$) is closest to:

Criterion 7. But-1-ene reacts with hydrogen bromide. The possible products are:

Criterion 7. Propan-1-ol is heated with excess acidified potassium permanganate. The organic product is:

Criterion 7. Which set of species is isoelectronic, all with the configuration $1s^2\,2s^2\,2p^6$?

Criterion 8. 5.00 g of magnesium is added to 100 mL of 1.00 mol L$^{-1}$ HCl: $\text{Mg} + 2\text{HCl} \rightarrow \text{MgCl}_2 + \text{H}_2$. The volume of hydrogen produced at SLC (24.5 L mol$^{-1}$) is closest to:

Criterion 8. A current of 0.500 A is passed through silver nitrate solution for 20.0 minutes. The mass of silver deposited ($F = 96\,500$ C mol$^{-1}$, $M = 107.9$ g mol$^{-1}$) is closest to: