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Topic: Gravimetric Calculations  (Read 3478 times)

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Offline skaterjay

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Gravimetric Calculations
« on: June 26, 2010, 09:03:26 AM »
A 0.64 g sample containing both NaCl and NaBr gives a precipitate AgCl and AgBr that weighs 0.5269 g. Another 0.64-g sample is titrated with 0.1084-F AgNO3, requiring 27.52 mL. Calculate the percentages of NaCl and NaBr in the sample.

Formula Mass: NaCl = 58.442 ; NaBr = 102.89 ; AgCl = 143.32 ; AgBr = 187.77

I'm having a problem how to use the moles of Ag+ that I'll be getting from the highlighted part.

Offline Borek

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Re: Gravimetric Calculations
« Reply #1 on: June 26, 2010, 10:50:45 AM »
Qrite separate equations for sum of masses and sum of moles of sodium chloride and bromide.
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