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CHEMISTRY
REQUIRED PRACTICALS
3 - TEMPERATURE ON RATE OF REACTION
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Created by
Jasmine Singh
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METHOD?
Set water bath to
20
degrees Celsius
Measure
x
cm^3
of
1
moldm^-3
HCl
and add to
conical flask
Allow solution to reach
temperature
of
water bath
Weigh
x
g
of
magnesium ribbon
Place into
conical flask
,
immediately
attach
gas syringe
and start a
timer
Record
volume
of
gas evolved
in first
20 seconds
Repeat
for a range of
temperatures
Plot
graph
of
temperature
(
x-axis
) against
initial rate
(
y-axis
)
WHY NOT ABOVE 60 DEGREES CELSIUS?
water evaporates
from
HCl solution
,
increasing concentration
