The experiments conducted by two students are given below.
Experiment 1: 2mL of sodium thiosulphate solution is taken in a test tube, heated and to it 2 mL of HCl solution is added.
Experiment 2: 2 mL of sodium thiosulphate solution is taken in a test tube and to it 2 mL of HCl solution is added.
In which experiment is the precipitate formed quickly ? justify your answer.