40
60 100 150
5 10 15 20 25 30 40 60 10
walume of hl30 50 63 75 83 89 94 100 101
called com
(a) slunch the experimental set-up.
() ploe the volume of hydrogen gas collected
a t the time taken
c) saan the time taken for the reaction to rea
completion
(2) expathe gradual decrease of the reaction
(6) why did the student stop taking readings
a ncond intervals after 30 seconds?
explain the importance of taking readings
n o successive readings agree.
on the same axes, sketch and explain the
one that would be obtained at
a higher temperature.
6) lower acid concentration