Copper sulphate reacts with sodium hydroxide to form a blue precipitate of copper hydroxide and sodium sulphate. In an experiment, `15.95 g` of copper sulphate reacted with `8.0` g sodium hydroxide to form `9.75 g` of copper hydroxide and 14.2 g of sodium sulphate. Which law of chemical conbination is illustrated by this data ? Give reason for your choice.

Answer

Law of conservation of mass ; Because the mass of products (`9.75 g + 14.2 g`) is equal to the mass of reactants `(15.95 g + 8.0 g)`. There is no change in mass in this reaction