Which of the following are correct for 0.1 M solutions of the given substances? (Na2CO3 is titrated with a strong acid using phenolphthalein, i.e. only up to NaHCO3.)

Na2CO3 to the phenolphthalein end point: 0.1 N.

K2Cr2O7 in acidic medium: 0.3 N.

Na2CO3 to the phenolphthalein end point: 0.1 N.

JEE Main levelOne or more correct optionsDifficulty 2 of 3eq179

Which of the following are correct for $0.1 M$ solutions of the given substances? ( $Na X_{2} CO X_{3}$ is titrated with a strong acid using phenolphthalein, i.e. only up to $NaHCO X_{3}$ .)

Ba (OH) X_{2}

has n = 2 (0.2 N),

KMnO X_{4}

has n = 5 (0.5 N) and

Na X_{2} CO X_{3}

accepts one proton up to

HCO X_{3} X^{-}

(n = 1, 0.1 N).

K X_{2} Cr X_{2} O X_{7}

has n = 6, so it is

0.6 N

, not

0.3 N