September 20, 2019, 02:33:28 PM
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Topic: calculation of volume  (Read 311 times)

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Offline jmjengland

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calculation of volume
« on: May 28, 2019, 10:19:01 AM »
Dear All,

I would like to ask for help with this challenge please.

Calculate volume of 20% NaOH which is needed to increase pH of NaCl from 2 to 7 with volume of NaCl 60 cubic meter.

Thank you for any help.

Offline Borek

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Re: calculation of volume
« Reply #1 on: May 28, 2019, 10:33:20 AM »
increase pH of NaCl from 2 to 7

NaCl solutions don't have pH around 2. If the pH is 2, solution contains also something else. No way to answer the question without knowing what.

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Offline jmjengland

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Re: calculation of volume
« Reply #2 on: May 28, 2019, 11:43:55 AM »
Yes you are right. NaCl solution contains HCl.
HCl so

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