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A first order reaction is 60 % complete in 20 min. How… | StemPy Lab
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A first order reaction is 60 % complete in 20 min. How long does it take to be 90 % complete? Take log 2 = 0.301.
Chemistry
Medium
High School (11–12)
Chemical Kinetics › Integrated Rate Equations and Half-Life
AP
A-Level
IB
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StemPy Lab
A first order reaction is 60 % complete in
20
min
20\ \text{min}
20
min
. How long does it take to be 90 % complete? Take
log
2
=
0.301
\log 2 = 0.301
lo
g
2
=
0.301
.
30.0
min
30.0\ \text{min}
30.0
min
50.3
min
50.3\ \text{min}
50.3
min
90.2
min
90.2\ \text{min}
90.2
min
116
min
116\ \text{min}
116
min
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← For a reaction of a single reactant, the half-life is found to be directly proportional to the starting concentration. What is the order of the reaction?
For a first order reaction, a graph of log([R]/(mol/L)) against time is a straight line with a slope of -0.0120 min⁻¹. What is the half-life? →
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Chemical Kinetics › Integrated Rate Equations and Half-Life
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