Answer to Question #194882 in General Chemistry for Prince F. Kollie

Question

1.00 mL of a 2.90x10^-4 M solution of oleic acid (C₁₈H₃₄O₂) is diluted with 9.00 mL of petroleum ether (C₆H₁₄), forming solution A. Then 2.00 mL of solution A is diluted with 8.00 mL of petroleum ether, forming solution B. What is the concentration of solution B?

Answer 1

We will use dilution formula two times

For solution A

M1V1=M2V2

 2.90x10^-4 *1=9M2

M2= 0.32x10^-4 

FOr solution B

 0.32x10^-4 *2=8*M2

M2=  0.08x10^-4