Describe the color of the original solution and the 10 percent ...

[EAugust]

Describe the color of the original solution and the 10 percent solution. Which
  liquid is darker in color? Why?

 
  What will be an ideal response?

Question 2

Suppose you want to make a 10 percent solution (by volume) of colored water.
  Your teacher tells you that the final volume of the 10 percent solution is 1 liter.
  Describe how you would make the solution. How much water would you use to
  dilute the colored solution? How much of the original solution would you use?

 
  What will be an ideal response?

[tmlewis4706]

Answer to Question 1

The original solution would be much darker in color than the 10 percent solution.
Because the 10 percent solution is made of 1 part original solution and 9 parts
water, the higher concentration of water (which is clear) in the 10 percent solution
accounts for the lighter color

Answer to Question 2

a) Remembering that 10 percent is equal to 110 and that 1 liter is equivalent to
1,000 ml, you would multiply 1,000 ml by 110 to calculate the volume of colored
solution to be used.
b) 1,000 ml (final volume)  110 (concentration of solution) = 100 ml (colored
solution)
c) If the final volume of the solution is to be 1 liter (1,000 ml), the amount of water
to be added to the colored solution is the final volume (1,000 ml) minus the
volume of the colored solution (100 ml).
d) 1,000 ml (final volume)  100 ml (colored solution) = 900 ml (water)
e) To summarize the calculations, you would add 100 ml of the colored solution to
900 ml of water to obtain a 10 percent solution with a final volume of 1 liter.