Question

for: rate=k[A]^x determine the value of x if the rate doubles when [A] is doubled; and if the rate quadruples when [A] is doubled.

Answer 1

If x =1, then doubling [A] would yield 2^1, which is 2. Thus, you are doubling the rate. (you multiplied by 2).

If x =2, then doubling [A] would yield 2^2, which is 4. Hence multiply rate by 4 and is squadrupled