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JEE Main levelSingle correct optionDifficulty 2 of 3sb182

A solution containing 0.50 mol of $NaOH$ absorbs exactly 0.50 mol of $CO X_{2}$ in water. The sodium compound formed is

A $Na X_{2} CO X_{3}$
B $NaHCO X_{3}$
C $NaHCO X_{3}$ and unreacted $CO X_{2}$ in equal moles
D $Na X_{2} CO X_{3}$ and unreacted $NaOH$ in equal moles

Answer: B

With

NaOH

:

CO X_{2}

= 1 : 1 the reaction is

NaOH + CO X_{2} NaHCO X_{3}

. A 2 : 1 ratio would be needed for

Na X_{2} CO X_{3}

.

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