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BITSAT 2010

Exam: BITSAT
Year: 2010
Subject: Chemistry
Chapter: p Block Elements (Group 15, 16, 17 & 18)

BITSAT 2010 · Chemistry · p Block Elements (Group 15, 16, 17 & 18)

Which liberates ammonia when treated with water?

Which liberates ammonia when treated with water?

Options

A $\mathrm{Li}_{3} \mathrm{ N}$
B $\mathrm{Mg}_{3} \mathrm{ N}_{2}$
C $\mathrm{CaCN}_{2}$
DAll

Correct answer

D. All

Step-by-step solution

All nitrides react with

\mathrm{H}_{2} \mathrm{O}

to give

\mathrm{NH}_{3}

and

\mathrm{CaCN}_{2}

also react with

\mathrm{H}_{2} \mathrm{O}\mathrm{CaNCN}+3 \mathrm{H}_{2} \mathrm{O} \longrightarrow \mathrm{CaCO}_{3}+\mathrm{NH}_{3}

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