STATEMENT-1: In the titratio of `Na_(2)CO_(3)` with HCl using methyl orange indicator, the volume of the acid required at the equvalence point is twice that of the acid required using phenolphthalenin as inkdicator.
STATEMENT-2: Two moles of HCl are required for the complete neutralisation of one mole of `Na_(2)CO_(3)`

Options

A. If both (A) and (R) are correc, and (R) is the correct explanation of (A).
B. If both (A) and (R) are correct but (R) is not the correct explanation of (A).
C. If (A) is correct, but (R) is incorrect.
D. If (A) is incorrect, but (R) is correct.

Answer

B

Explanation

Both `(A)` and `(R)` are correct but `(R)` is not the correct explanation of `(A)`.
Correct `R: Na_(2)CO_(3)` reacts with `HCI` upto the stage of `NaHCO_(3)` in the presence of phenolphthalein.
`Na_(2)CO_(3) + HCI rarr NaHCO_(3) + NaCI`