Question

If you add 6 drops of food coloring and 14 drops of water in a test tube. What is the concentration (v/v%) of food coloring in the test tube?

Answer 1

Answer : The concentration (v/v%) of food coloring in the test tube is 30%.

Solution : Given,

Drops of food coloring = 6 drops

Drops of water = 14 drops

Formula used :

$\text{ Concentration of food coloring}=\frac{\text{ Drops of food coloring}}{\text{ Total drops in test tube}}\times 100$

Total drops in the test tube = Drops of food coloring + Drops of water

Total drops in the test tube = 6 + 14 = 20 drops

Now put all the given values in the above formula, we get

$\text{ Concentration of food coloring}=\frac{6drops}{20drops}\times 100=30\%$

Therefore, the concentration (v/v%) of food coloring in the test tube is 30%.