USA
(A)
2.5 g glycerine
+ 50 ml alcohol
(B)
4.6 g glycerine
+ 50 ml alcohol
(C)
1.2 g glycerine
+ 50 ml alcohol
1. Identify the solute and the solvent.
2. Identify whether the above solution is aqueous or non-aqueous.
3. Identify which of the three solutions is the most concentrated one.
4. Based on your acquired knowledge, propose a technique which allows to render solution(A)
having the same concentration of solution (C)
5. Half of the amount of alcohol in solution (B) is evaporated. Is the obtained solution more or
less concentrated? Justify.
Exercise 2:
Consider the following solutions of copper sulfate and water in 3 test tubes.
Test Amount of copper
Tube sulfate (grams)
Amount of
water (mL)