For the reaction, A(g) + B(g) => AB(g), the rate is 0.625 mol/L. s when the initial concentrations of both A and B are 2.00 mol/L. If the reaction is first order in A and first order in B, what is the rate when the initial concentration of A = 4.41 mol/L and that of B = 2.72 mol/L. Give answer to 2 decimal places.

The rate of concentration is 1.87 mol L⁻¹s⁻¹

Explanation:

First order reaction: First order reaction is only depends on the value of the concentration of only one reactant.

A(g)+B(g)⇒AB(g)

rate of reaction = k [A][B]   [ since A and B are first order reaction]

k= rate constant

[A] = concentration of A

[B] = concentration of B

Given that rate = 0.625 mol/L.s

[A] = 2 mol/L   and   [B] = 2 mol/L

Therefore,

rate of reaction = k [A][B]

⇒0.625= k ×2×2

The value of k changes only when the temperature changes.

Now [A]= 4.41 mol/L    and   [B]=  2.72 mol/L

Rate of reaction = K[A][B]

 ≈1.87 mol L⁻¹s⁻¹

The rate of concentration is 1.87 mol L⁻¹s⁻¹

explanation:

two years ago, when picking flowers in the mountains back of yosemite valley, i found a book. it was blotted and storm-beaten; all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however; many of the inner pages were well preserved. and although all were more or less stained and torn, whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today; its granite pages have been torn and blurred by the same storms that wasted the castaway book.

two years ago, when picking flowers in the mountains back of yosemite valley; i found a book. it was blotted and storm-beaten, all of its outer pages were mealy and crumbly. the paper seemed to dissolve like the snow beneath which it had been buried, however, many of the inner pages were well preserved. and although all were more or less stained and torn; whole chapters were easily readable. this is the condition of the great open book of yosemite glaciers today, its granite pages have been torn and blurred by the same storms that wasted the castaway book.