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Dilution and concentration of solutions
• Ex: If 500 mL of a 15% v/v solution of methyl salicylate in
alcohol is diluted to 1500 mL, what is the percentage
strength v/v?

Solution
C1V1 = C2V2
15 (%) X 500 (ml) = C2 X 1500 (ml)
C2= (15*500)/1500 = 5%