Consider the following statements and arrange in the order of true/false as given in the codes.
$S_{1} :$ The rate of the reaction A $\to$ B having the rate law $- \frac{d [ A ]}{d t} = k [A] [B]$ when plotted against time will exhibit a maximum at some time.
$S_{2} :$ A catalyst in a chemical reaction increases the forward E $_{a}$ and decreases the backward $E_{a}$
$S_{3} :$ A catalyst in a chemical reaction decreases both forward and backward $E_{a}$
$S_{4} :$ For a first-order reaction, the time required to reduce successively the concentration of reactant by a constant fraction is always same.

Question

Consider the following statements and arrange in the order of true/false as given in the codes.

S_{1} :

The rate of the reaction A

\to

B having the rate law

- \frac{d [ A ]}{d t} = k [A] [B]

when plotted against time will exhibit a maximum at some time.

S_{2} :

A catalyst in a chemical reaction increases the forward E

_{a}

and decreases the backward

E_{a}

S_{3} :

A catalyst in a chemical reaction decreases both forward and backward

E_{a}

S_{4} :

For a first-order reaction, the time required to reduce successively the concentration of reactant by a constant fraction is always same.

Filo · Accepted Answer

The rate of the reaction A B having the rate law d[A]dt=k[A][B] when plotted against time will exhibit a maximum at some time.
This is because , rate = 0 at t = 0 and t = . Hence statement 2 is true.
A catalyst in a chemical reaction decreases the forward Ea and decreases the backward Ea
It decreases both by equal amount. Hence, statement 2 is false.
A catalyst in a chemical reaction either increases or decreases both forward and backward Ea by equal amount. Hence statement 3 is true.
For a first-order reaction, the time required to reduce successively the concentration of reactant by a constant fraction is always same.
This is because, the half life period is constant for first order reaction. Hence, statement (4) is correct.

Question Text	Consider the following statements and arrange in the order of true/false as given in the codes. $S_{1} :$ The rate of the reaction A $\to$ B having the rate law $- \frac{d [ A ]}{d t} = k [A] [B]$ when plotted against time will exhibit a maximum at some time. $S_{2} :$ A catalyst in a chemical reaction increases the forward E $_{a}$ and decreases the backward $E_{a}$ $S_{3} :$ A catalyst in a chemical reaction decreases both forward and backward $E_{a}$ $S_{4} :$ For a first-order reaction, the time required to reduce successively the concentration of reactant by a constant fraction is always same.
Answer Type	Text solution:1
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Text solutionVerified

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