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Identify the Reaction Type

APCHEM-4VXDDY

Which of the following is a decomposition reaction?

A

$3Na(s)+Fe{ Br }_{ 3 }(aq)\rightarrow 3NaBr(aq)+Fe(s)$

B

$NaOH(aq)+HN{ O }_{ 3 }(aq)\rightarrow NaN{ O }_{ 3 }(aq)+{ H }_{ 2 }O(l)$

C

$2NaHC{ O }_{ 3 }(s)\rightarrow { Na }_{ 2 }C{ O }_{ 3 }(s)+C{ O }_{ 2 }(g)+{ H }_{ 2 }O(l)$

D

$3{ H }_{ 2 }(g)+{ N }_{ 2 }(g)\rightarrow 2N{ H }_{ 3 }(g)$