Ra
ates of reaction
r
n
Stre
engthen
n
SC
C18a
a.3
Name
N
1
Class
s
Daate
The diagram below shows an exp
perimental se
et-up to inves
stigate the efffect of changging conditio
ons on the
rate of re
eaction. Com
mplete the mis
ssing informa
ation in the sentences
s
be
elow.
a
Three
e variables that
t
could be
e investigated
d are:
c ___
__________
___________
___________
__________
_
t ___
__________
___________
___________
__________
_
s ___
__________
________ a __________
__________
_
These
T
wordss may help yo
ou to answerr question 1.
carbon d
dioxide
mass
re
eactants
c
concentration
n
surface are
ea
decre
eases
tempe rature
fla
ask
vo
olume
The rrate of a reacction can be followed by measuring th
he loss in m ________________. As the reaction
takess place, c ___
__________
________ d _
___________
_________ gas
g is given ooff and the mass
m
of the
coniccal f _______
___________
___ and the r _________
___________
_ decreases . To follow th
his reaction,
we co
ould also me
easure the v __________
_
__________ of gas produ
uced or the d _________
___________
_
in con
ncentration of
o acid.
S1 Look at the reaction in the diagra
am above.
2
a
Wha
at is being measured
m
in this experime
ent?
b
Wha
at happens to
o the concen
ntration of the
e acid as the
e reaction pro
oceeds?
c
Wha
at other chan
nge could be measured to
o follow this reaction?
The table
e on the rightt shows results of an inve
estigation intto
the reaction of calcium
m carbonate and acid ussing the
apparatus above.
Trial
Temperaature
(°C)
Tim
me for 0.5 g
loss
s in mass
(s)
a
Name
e the variable
e being inves
stigated. ___
_________
1
21
60
b
Name
e three varia
ables that would need to b
be controlled
d.
2
33
28
____
__________
___________
___________
_________
3
42
13
4
50
7
____
__________
___________
___________
_________
____
__________
___________
___________
_________
c
Expla
ain what thesse results tell us about ra
ates of reactio
on.
____
__________
___________
___________
__________
___________
___________
___________
___________
_
____
__________
___________
___________
__________
___________
___________
___________
___________
_
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