I) Name the catalyst used in step II:

Here are the solutions to your chemistry questions:

1.

• i) Name the catalyst used in step II:
  • The catalyst used in step II is Manganese(IV) oxide ($\text{MnO}_2$).
• ii) Give a reason why catalyst is crushed into fine particles before use in step I:
  • Crushing the catalyst into fine particles increases its surface area, which in turn increases the rate of reaction.
• iii) Give the correct name of Salt P. Solid Q.
  • Salt P: Copper(II) sulphate ($\text{CuSO}_4$)
  • Solid Q: Copper(II) hydroxide ($\text{Cu(OH)}_