Question

Question #cfc54

Answer 1

You will need the concentration of the stock solution of disinfectant!

Explanation:

This is a dilution question where it can be solved as follows.

The number of mole of the disinfectant in a `V` volume of the stock solution (we will call it) `n_s` is equal to the number of mole of the disinfectant in 2.00 L of the hand-soap solution (we will call it) `n_h`.

This would give us: `n_s = n_h`

In general, the number of mole `n` is related to the concentration by `n = C xx V` where `C` is the concentration and `V` is the volume.

Therefore, `C_s xx V_s = C_h xx V_h`

`C_h = 0.400 "mol/L" and V_h = 2.00L`

To calculate the volume of the disinfectant `V_s = (C_h xx V_h)/C_s` you will need the value of `C_s` which is the concentration of the disinfectant stock solution.