I know that: 5.00 grams HCl per 100 ml of solution
I also know that the equivalence point is at 18 ml.
I need to find the moles of HCl in 18 ml.
How do I do this?!
Density = mass/volume = 5/100= .05 but what do I do with density?? How do I get moles of HCL out of 18ml??
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HELP!!!
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Dear convert-me.com forum visitors,
Our forum has been available for many years. In September 2014 we decided to switch it to read-only mode. Month after month we saw less posts with questions and answers from real people and more spam posts. We were spending more and more resources cleaning the spam until there were less them 1 legitimate message per 100 spam posts. Then we decided it's time to stop.
All the posts in the forum will be available and searchable. We understand there are a lot of useful information and we aren't going to remove anything. As for the new questions, you can always ask them on convert-me.com FaceBook page
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Re: HELP!!!
by Guest » Sun Oct 19, 2008 6:42 pm
CNJ wrote:I know that: 5.00 grams HCl per 100 ml of solution
I also know that the equivalence point is at 18 ml.
I need to find the moles of HCl in 18 ml.
How do I do this?!
Density = mass/volume = 5/100= .05 but what do I do with density?? How do I get moles of HCL out of 18ml??
1) First use concentration to determine grams of HCl in 18 mL:
5 g/100 mL x 18 mL = 0.9 g HCl
2) Determine molecular weight to get molar mass. From periodic table, H = 1.008, Cl = 35.453, hence HCl = 36.461. This is also the molar mass in g/mol.
0.9 g x 1 mol/36.461 g = 0.02468 nol = 24.68 mmol.
- Guest
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