Problem 9.19 Aqueous ammonia is commercially available at a concentration of 16.0 M. Part A How much of the...

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Chemistry

Problem 9.19
Aqueous ammonia is commercially available at a concentration of16.0 M.
Part A
How much of the concentrated solution would you use to prepare400.0 mL of a 1.70 M solution?

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4.0 Ratings (745 Votes)

Before dilutionÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â after dilution

M1 = 16MÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â M2 = 1.7M

V1Â Â Â =Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â V2 = 400ml

Â Â Â Â Â Â Â Â Â Â M1V1Â Â = M2V2

Â Â Â Â Â Â Â Â Â Â V1Â Â Â Â Â Â = M2V2/M1

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â =1.7*400/16 = 42.5ml >>>> answer

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