51. The phenolphthalein alkalinity (P) & total alkalinity (M) of a water sample are related as 2P = M. The type of alkalinity in water is_
Answer (1)
6th Jan, 2021
Hello candidate,
Let's first know about Alkalinity- Alkalinity is measured by titrating a water sample with a standard acid to a designated pH and is recorded as P or M alkalinity.
The P alkalinity is titrated with phenolphthalein to pH 8.3, and the M alkalinity with methyl orange indicator to pH 4.6. So as, 2P= M, which means that, it is P type Alkalinity.
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