the rate law for the reaction 2a + b = c was found to be rate =k{A}{B}^2. If the concentration of B is tripled and the concentration of A is unchanged how many times will the reaction rate increase? show full working out.
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12th
Chemistry
Chemical Kinetics
Factors Influencing Rate of a Reaction
The rate equation for the r...
CHEMISTRY
The rate equation for the reaction 2A+B→C is found to be : rate=k[A][B]. The correct statement in relation to this reaction is:
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ANSWER
2A+B ⟶ C.
Rate = K[A][B]
∙ order of the given reaction = 2.
∴t
1/2
is not constant. It is constant only for a first order reaction.
∴ Unit of K for n
th
order reaction is M
(1−n)
time
−1
for a 2
nd
order reaction it is M
−1
S
−1
∴ As per rate law :
2
−1
dt
d[A]
=
dt
d[C]
∴ The rate of formation of C is half of the rate of disappearance of A.
∴ The rate constant is independent of the initial concentrations of the reactants. As k only changes when temperature chnages