Rate = k [O2] [NO]^2 ; unit of k is dm^6 mol^-2 s^-1
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15
Answer this question
Homogeneous catalyst bcs same phase with reactants
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20
Why half life for the first order reaction is independent of concentration?
t1/2 = 0.693 / k, not depended on concentration
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25
State the unit of rate constant
Unit of k = s^-1
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25
Answer this question below
2A + Bâ> D ; 1st equation. Its means the rate of reaction is determined by the concentration of A and B in the first step ; rate =k[A][B]
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10
Use this data to calculate the rate constant [H2O2]=0.03 M, [I^-1] = 0.01 M, initial rate of reaction 5.30 x 10^-6. The rate equation for this reaction is k [H2O2] [I^-1]
0.0177 mol dm^3 mol^-1 s^-1
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15
A first order reaction has a rate constant of 9.63x10^-5 s^-1. Calculate a value for the half life of this reaction.
7200
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10
State the order for the following picture
Second order
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boom
Lose 50 points!
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magnet
Take 15 points!
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shark
Other team loses 20 points!
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banana
Go to last place!
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15
We can identify the order of a reaction in three ways. Explain it!
plot a graph of reaction rate against concent of reactant, graph of concent of reactant against time & Deduce successive t1/2 from graphs of concent x time
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25
Write the rate equation for this reaction and state the overall order for the reaction
Rate=k[B]^2 [C] ; overall order =3; unit of k = dm^6 mol^-2 s^-1
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10
What is the general rate reaction equation for blue line?
Rate = k [A]^1
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15
Explain 3 factors that effectively increase reaction rate !
-the concentration of the reactants are increased -the temperature is increased -a catalyst is added to the reaction mixture
