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### Topic: calculate molarity of Ag+ in ?  (Read 6764 times)

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#### yapss

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##### calculate molarity of Ag+ in ?
« on: November 25, 2005, 01:30:49 AM »
hey i just have a question which i dont know how to approach, if i can just get a lead or a clue will appreciate it, no spoon feeding please.

A 0.1752 g sample of primary standard Agno3 was dissolved in 502.3 g of distilled water. calculate molarity of Ag+ in this solution.

How can i calculate molarity when i dont have the volume?

Help will be appreciated.
« Last Edit: November 25, 2005, 01:35:25 AM by Mitch »

#### Borek

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##### Re:calculate molarity of Ag+ in ?
« Reply #1 on: November 25, 2005, 02:51:33 AM »
What is density of water?
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#### AWK

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##### Re:calculate molarity of Ag+ in ?
« Reply #2 on: November 25, 2005, 03:14:07 AM »
Moreover, for such diluted solution you can safely assume volume of solution is equal to volume of water.
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#### Albert

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##### Re:calculate molarity of Ag+ in ?
« Reply #3 on: November 25, 2005, 05:48:59 AM »
Assuming that density of PURE water is 1.00 g/mL, you have 502.3 mL as volume of water in which you introduce 1.031 E-03 moles of AgNO3.

[Ag+] = 2.052 E-3