Question

hard water sample is given and titrated with 0.002 N of sulphuric acid. Beneath are the concordant readings of titration recorded. where A represents the A and B represents the B. Calculate the Methyl orange

Alkalinity. (5)

(1) A = 0 ,(Phenolphthalein)

B = 14ml (Methyl orange)

(2) A = 0 ,(Phenolphthalein)

B 14.5ml (Methyl orange)

(3) A = 0,(Phenolphthalein)

B 14.3ml (Methyl orange)

Answer 1

(2) A = 0 ,(Phenolphthalein)

B 14.5ml (Methyl orange)