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Topic: conversion of total alkalinity to pH  (Read 2396 times)

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Offline mufan

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conversion of total alkalinity to pH
« on: June 12, 2015, 12:30:35 PM »
Hi,
I know that pOH is neg log of OH concentration.  But I've always done this using molarity.  how do you do this if you have total alkalinity?  for instance, if the total alkalinity of a solution is 400 ppm...what is the calculated pH?

thanks!
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Offline Borek

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Re: conversion of total alkalinity to pH
« Reply #1 on: June 12, 2015, 01:56:51 PM »
Total alkalinity is not directly related to pOH.
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Offline mufan

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Re: conversion of total alkalinity to pH
« Reply #2 on: June 15, 2015, 12:31:05 PM »
I agree.  you have carbonate alkalinity in there as well.  So is it something that you can figure out by taking a p alkalinity or 2p-m for an OH alkalinity?  or the addition of several alkalinity concentrations? 
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