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Topic: NaOH  (Read 3205 times)

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Offline nature boy

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NaOH
« on: March 01, 2016, 12:23:25 PM »
Hello everyone!
I just bought a 50% NaOH solution. It's quite thick!
Question: It means that 1000 grams of this solution contains 500gr NaOH?
(I read a data sheet of another NaOH solution that 50% contains 764.780gr/L - so I'm confused...)
Thank you.
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Offline AWK

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Re: NaOH
« Reply #1 on: March 01, 2016, 02:15:26 PM »
Check density of solution.
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AWK

Offline nature boy

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Re: NaOH
« Reply #2 on: March 01, 2016, 02:53:06 PM »
Thank you, yes I think I confuse volume with mass. The density is 1.53 and molarity 20. So actually is about 52%! So 1000 grams solution contains 520 grams NaOH. Right?
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Offline AWK

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Re: NaOH
« Reply #3 on: March 01, 2016, 03:21:21 PM »
764 g of NaOH is closer to 19 moles.
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AWK

Offline Burner

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Re: NaOH
« Reply #4 on: March 01, 2016, 08:40:38 PM »
Just want a little clarification: 50% NaOH solution means there are 50% NaOH by volume in the solution, right??
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Year 1 science student in HKUST and a Chemistry geek.
If I make any mistakes in the forum, please don't hesitate to correct me as I want to learn.

Offline AWK

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Re: NaOH
« Reply #5 on: March 01, 2016, 09:23:15 PM »
% without addition informatiom always me3ans mass percentage.
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Offline Burner

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Re: NaOH
« Reply #6 on: March 01, 2016, 10:40:41 PM »
Quote from: AWK on March 01, 2016, 09:23:15 PM
% without addition informatiom always me3ans mass percentage.

Thanks
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Year 1 science student in HKUST and a Chemistry geek.
If I make any mistakes in the forum, please don't hesitate to correct me as I want to learn.
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