Answer to Question #277427 in General Chemistry for Vishal

Question

Q5. A water sample is alkaline to both phenolphthalein and methyl orange. 200ml of water sample on

titration with N/25 HCl required 5ml of the acid up to phenolphthalein end point. When a few drops of

methyl orange are added to the same solution and titration was further continued to yellow color of

the solution just turn orange after the addition of another 12 ml of acid. Calculate the type and extent of

alkalinity present in water sample in different units.

Answer 1

The answer is provided in the image below