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Topic: Titration problem  (Read 7126 times)

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Offline hupnosis

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Titration problem
« on: January 05, 2016, 03:08:21 PM »
What mass of AgBr is formed when 35.5 mL of 0.184 M AgNO3 is treated with an excess of hydrobromic acid?

I was wondering if i did this problem correctly.
.0035*.184M=.006532 moles AgNO3
.006532 moles AgNO3 * 169.845g AgNO3 = 1.11g AgNO3
(1.11g AgNO3)(1 mole AgNO3/169.845)(1 mole AgBr/1 mole AgNO3)(187.768AgBr/1 mole AgBr)= 1.227g AgBr formed

so 1.227g of AgBr are formed.
Thanks for all the help :)

Offline mikasaur

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Re: Titration problem
« Reply #1 on: January 05, 2016, 03:31:35 PM »
Besides the extra step, it looks good (you multiplied the 0.006532 mols of AgNO3 by its atomic mass just to divide by that same mass in your next step).

Also you're using 0.0035 L instead of 0.00355 L.

I'd double check your atomic masses as well (not that they're wrong, but I didn't check them and it's always good to make sure you get easy stuff like that right!). And your sig figs!
Or you could, you know, Google it.

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