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JEE Main levelOne or more correct optionsDifficulty 2 of 3eq128

For 0.1 mol of each substance reacting completely as stated with a suitable reagent, which statements about the number of equivalents are correct?

A $H X_{3} PO X_{4}$ converted to $Na X_{2} HPO X_{4}$ by NaOH: 0.2 eq
B $Na X_{2} CO X_{3}$ converted to $NaHCO X_{3}$ by HCl: 0.2 eq
C $Al (OH) X_{3}$ neutralised completely by HCl: 0.3 eq
D $NaHCO X_{3}$ reacting with HCl to give $CO X_{2}$ : 0.1 eq

Answer: A, C, D

Equivalents = 0.1

\times

n.

H X_{3} PO X_{4}

to

Na X_{2} HPO X_{4}

: n = 2, 0.2 eq (true).

Na X_{2} CO X_{3}

to

NaHCO X_{3}

: n = 1, so 0.1 eq, not 0.2 (false).

Al (OH) X_{3}

has 3

OH X^{-}

: 0.3 eq (true).

HCO X_{3} X^{-}

takes one

H X^{+}

: 0.1 eq (true).

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