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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: yapss on November 25, 2005, 01:30:49 AM

Title: calculate molarity of Ag+ in ?
Post by: yapss 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.

Title: Re:calculate molarity of Ag+ in ?
Post by: Borek on November 25, 2005, 02:51:33 AM

What is density of water?

Title: Re:calculate molarity of Ag+ in ?
Post by: AWK 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.

Title: Re:calculate molarity of Ag+ in ?
Post by: Albert 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