JEE Advanced Model Paper 10 with solutions for online practice

Question : 32 of 54

Marks: +1, -0

A one litre solution contain x moles of NaOH, y moles of Na2CO3 and z moles of NaHCO3. The solution is titrated with 1 molar solution of HCl. Select the correct statement (HPh - phenolphthalein and MeOH - methyl orange)

The volume of HCl used for titration is (x + y) L if only HPh indicator is used
The volume of HCl used for titration is (x + 2y + z) L if only MeOH is used from starting
The volume of HCl used for titration is (2y + z) L if MeOH is used after the 1st equivalent point using HPh
Ratio of moles of HCl used for titration using only HPh, to that of HCl used for titration using MeOH after 1stequivalence point with HPh = (
x+y
y+z
) L

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