X1200)/
200
.01=x
muimzuz
data table
experiment
reaction time
solution a
0.1 m kio3 water
diluted kio3
molarity (final
v= 300 ml for
solutions a and
b)
.025 m
reaction rate
(assuming the
change in
reactant was
1m)
- grade now
- work to do
150 ml
50 ml
100 ml
25 ml
olm
717sec.
20 ml so
1oone!
80 ml
33 ml
challenge!
predicted time
actual time
data analysis
1. look at your clata and determine the order using your diluted molarities and your reaction rates (do this at least
twice to make sure it is consistent throughout). justify your answer.
october 10,
chemistry: 7
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2. write the rate law with respect to kio3.
3. find k of the reaction if the concentration of na2s205 is a constant .2m.
4. what would the rate be if my concentration of kio3 was .1m?
conceptual questions
1. (a) how did the reaction time change as the kio3 concentration was changed? (b) how is the rate of the reaction
related to the reaction time?
2. write a general statement describing the effect of reactant concentration on the rate of a reaction.
3. explain the effect of concentration on reaction rate in terms of collisions between molecules: when the
concentration of reactants increases, the reaction time.
because increasing the
of molecules or ions in solution increases the rate of
between them.
error analysis questions
1. if i did not start the timer fast enough, how would this affect my calculated rate of the reaction!
2. if i added a higher molarity than recorded, how would this affect my calculated rate of the reaction!