Answer:
Molarity of solution X is 0.1 M
Molarity of solution Y is 0.05 M
Explanation:
- Dilution involves addition of more solvent to a solution resulting to a decrease in concentration.
- Solution X is made by taking 10 mL of a 1.0 M and adding water to make a total volume of a 100 mL.
- Using dilution equation we can determine the Molarity of solution x.
- Dilution equation is given by, M₁V₁ = M₂V₂, where M₁ and M₂ are the initial and diluted solution concentrations while V₁ and V₂ are the start and the final volume respectively.
Therefore;
M₂ = M₁V₁ ÷ V₂
= (1.0 M × 0.01 L) ÷ 0.1 L
= 0.1 M
Thus, the concentration of solution X is 0.1 M
- On the other hand, solution Y is made by using 5 mL of solution X and diluting it again by adding it to 95 mL
- Therefore, using dilution equation we can find the molarity of solution Y
M₁V₁ = M₂V₂
M₁ = 0.1 M (molarity of solution X)
V = 5 mL
V₂ = 5 mL + 95 mL
= 100 mL
Thus, M₂= M₁V₁ ÷ V₂
= (0.1 M × 0.005 L) ÷ 0.01 L
= 0.05 M
Therefore, the molarity of solution Y is 0.05 M
