Question

A mixture containing 0.84 gm of NaHCO3, 4.0 gm of NaOH and 10.6gm of Na2CO3 is dissolved in water and the resulting solution is titrated with 0.5M HCl solution. Identify the option(s) which is/are correct.

A) The volume of HCl used when phenolphthalein is used as an indicator is 400ml.
B) The volume of HCl used when methyl orange is used as an indicator in a fresh solution is 620 ml.
C) The volume of HCl further used when methyl orange is used as an indicator in a solution already titrated with phenolphthalein is 220ml.
D) The volume of HCl further used when phenolphthalein is used as an indicator after titrating with methyl orange is 200ml.

Answer 1

Answer:

Explanation:

AThe volume of HCl used when phenolpthalein is used as an indicator is 400 ml

Answer 2

Answer:

the volume of HCI used when

phenolphthalein is used as an indicator is 400ml.

Explanation:

I'hope it helps