Put 10 mL of sodium thiosulphate solution into the 100 mL beaker and stir in 40 mL of water. Use this
concentration for the series of experiments with the temperature of the solution as the variable. Add 5 mL of acid as before and record the initial time and the temperature of the solution. Record the final time when the black cross below the beaker is no longer visible.Repeat the experiment, each time warming the thiosulphate solution to just over 30oC.
sharon kalunda answered the question on April 12, 2019 at 09:19
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