Answer:
R = k[ A ]²
Explanation:
What we are being asked is to determine the exponents in the equation:
R = k [A ]^a [B]^b
where R = reaction rate of the chemical reaction, k is the reaction constant, [A ][B] are the concentrations, and a and b are exponents.
Now the reaction has b= 0 since changing the concentration of B has no effect on the rate.
So,
R = k [ A ]^a
Doubling the amount of A, quadruples the reaction. Therefore a= 2, and the best law equation is R = k[ A ]²
