Craig Stamp 10RS
Reaction of Sodium Thiosulphate
and Hydrochloric Acid
Aim: To investigate the effect of temperature on the rate of reaction
Prediction
I predict that at higher temperatures the Sodium Thiosulphate will react faster with the hydrochloric acid and slower at lower temperatures. This is because at lower temperatures, particles of reacting substances do not have as much energy than particles at higher temperatures. This causes them to move faster with more energy and collide more often therefore the rate of the reaction increases. The mixture of Hydrochloric acid and Sodium Thiosulphate will then form a precipitate of sulphor making the water go cloudy.