Question

Question #6228f

Answer 1

800 mL solution

Explanation:

% (m/v) is just a fancy way of saying you have so many grams of solute for every `100mL` of solution.

If the question states you have a `15%(m/v)` `NaOH`, that just means that there are `15 "grams"` of solute for every `100 "mL"` of solution (NaOH + water)

Now, you are asked what volume or how much volume will contain 120 grams of `NaOH`.

Well, since we have established a conversion factor for the amount of solute dissolved per `100 "mL"` of solution, we can figure out our unknown by using dimensional analysis.

`(120 cancel"g NaOH")/1*(100 "mL solution")/(15 cancel"g NaOH") = 800 "mL solution"`

`Answer: 800 "mL solution"`