25. Twenty mL of pure liquid cresol are added to 200 mL of solvent to form...

Question

Question

25. Twenty mL of pure liquid cresol are added to 200 mL of solvent to form a solution. How many mL of the cresol solution wou

Answer 1

Answer #1

20 ml of pure liq cresol added to 200 ml of solvent to form a solusion.(stock solution)

percentage of the first cresol solution= (volume of pure liquid/ total volume of the solution) X 100

= (20/220) X 100

= 9.09 %

how many mL of the cresol solution would be needed to prepare 100 ml of 2% cresol solution.

S1 V1= S2 V2

9.09 X V1= 2 X 100

V1= 200/9.09

= 20 mL

Answer 2

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