Evil combination: Chem and Calc & Finding a Function
Two questions that have done my head in for the past couple of days; mind taking a look?
For the function y = c(e^-at – e^-bt)
With a, b, c, > 0 and t ≥ 0, find
i) y (0)
ii)the limit of y as t approaches infinity
iii)the point at which y reaches a maximum
In water and in solution the product of the concentrations of hydronium ions, [H3O+] and of hydroxyl ions, [OH-] is very close to 10^-14 (in moles).
Let S = [H3O+] + [OH-]
Determine the value of [H3O+] which minimises S.