Solution Dilution

by Lauren
(Chicago)

If 200 mL of an 11% solution is diluted to 1500 mL what is the strength of the solution?

Reply (by Keith)


Here's the set-up: (equation)


(200mL)(.11%)+(1300mL)(.00%)   = (1500mL)(X%)


Work out the math:


(200mL)(.11%)+(1300mL)(.00%) = (1500mL)(X%)


(200mL)(.11%)   =  (1500mL)(X%)


            22   =   1500X  


          X       =     .0147  


          X     =   1.5% (the solution is now 1.5%)