Answer to Question #201694 in Physical Chemistry for Gaurav Dhiran

Question #201694

A sample of water was alkaline both to phenolphthalein and methyl orange. 100 mL of this water sample required 20 mL of N/50 HCl for phenolphthalein end point and another 15 mL for complete neutralization. Elucidate the type and strength of alkalinity present in the water sample


1
Expert's answer
2021-06-02T06:04:23-0400

Here,diacidic base is present which gives two end points one with phenolphthalein and another with methyl orange.

Now, for phenolphthalein end point

equivalent to diacidic base equivalent of 15mL

or equivalent of diacidic base=



or, 1M equivalent of diacidic base=


But,

For Methyl Orange end point

1M equivalent of monoacidic base formed=1M equivalent of 15mL

or 1M equivalent of monoacidic base formed


Thus ,normality of diacidic alkalinity present in 100mL sample of water is given by :-


Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

Gaurav
04.06.21, 05:58

Thanks ☺️

Leave a comment

Ask Your question

LATEST TUTORIALS
New on Blog
APPROVED BY CLIENTS