two rates experiments

Question 1

what are the two reactions used in the rates experiments?

Answer 1

sodium thiosulfate and hydrochloric acid

magnesium and hydrochloric acid

Question 2

what is the experiment involving magnesium and hydrochloric acid?

Answer 2

use a set volume of hydrochloric acid and add to a conical flask and then add some magnesium ribbon
quickly attach a gas syringe to the flask and start the stop watch
take readings of the volume of gas produced at regular intervals and record the data
repeat with different concentrations of acid
keep volume of acid the same and the amount of magnesium ribbon

Question 3

what is the experiment using sodium thiosulfate and hydrochloric acid?

Answer 3

add a set volume of sodium thiosulfate to a conical flask and place on a piece of paper with a black cross drawn on it
then add a set volume of hydrochloric acid and start the stopwatch
watch the black cross disapear as sulfur is produced and time how long it takes to disapear
repeat with different concentrations of hydrochloric acid
make sure the depth of the liquid is always kept the same

this experiment does not give a graph