[问答题]
1.State the complete bala8ud 1qx-83he ;kta ouu+mdt*mnced equation for the reaction between sulphugr 1j5yqo54n iric acid and copper (II) oxi yr5qj1 o45nigde.
2.State the complete balanced equation for the reaction between ethanoic acid and potassium carbonate.
3.Outline two ways to monitor the rate of reaction for reaction (b) above.