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pH - HSN forum

# pH

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### #1cobainfan

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Posted 03 May 2008 - 06:44 PM

Hi,

I'm having troulbe calculating the pH of 5*10^(-2) moles per litre Sodium Hydroxide. Any help would be much appreciated.

### #2Marcus

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Posted 04 May 2008 - 11:21 AM

Is this in higher???

right, in water: [H+][OH-]=10-14 ([] means concentration of)

rearranging this you get [H+]=
so [H+] =

now I don't know of any higher method of working out the pH from here. so this is adv. higher

so pH would be 12.7

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### #3Linzi2011

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Posted 08 May 2008 - 02:08 PM

QUOTE(Marcus @ May 4 2008, 12:21 PM)
Is this in higher???

right, in water: [H+][OH-]=10-14 ([] means concentration of)

rearranging this you get [H+]=
so [H+] =

now I don't know of any higher method of working out the pH from here. so this is adv. higher

so pH would be 12.7

Aparrently so, we had a few questions on this in class about calculating the pH of a solution.

Its simple really once you know how it works as Marcus has said

### #4Xeraii

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Posted 11 May 2008 - 06:29 PM

This definitely isn't in the Higher course. Your teacher must just be giving you some extra problem solving questions.

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