Question
When sodium carbonate reacts with hydrochloric acid.
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Answer
When sodium carbonate reacts with hydrochloric acid, it forms sodium chloride, carbon dioxide and water.
$\begin{array}{llllll} Na _2 CO _{3( s )}+ HCl _{( aq )} & 2 & 2 NaCl _{( aq )} & + & CO _{2( g )}+ & H _2 O _{(l)} \\ \text { Sodium } & \text { Hydrochloric } & & \text { Sodium } & \text { Carbon } & \text { Water } \\ \text { carbonate } & \text { acid } & & \text { chloride } & \text { dioxide } & \end{array}$
$\begin{array}{llllll} Na _2 CO _{3( s )}+ HCl _{( aq )} & 2 & 2 NaCl _{( aq )} & + & CO _{2( g )}+ & H _2 O _{(l)} \\ \text { Sodium } & \text { Hydrochloric } & & \text { Sodium } & \text { Carbon } & \text { Water } \\ \text { carbonate } & \text { acid } & & \text { chloride } & \text { dioxide } & \end{array}$
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