2.3 Chemical Equations

Write word and balanced symbol equations (including states) for the following reactions:
-acid + alkali (-> salt + water)
Hydrochloric Acid + Sodium Hydroxide -> Sodium Chloride + Water
$H C l_{(a q)} + N a O H_{(a q)} \to N a C l_{(a q)} + H_{2} O_{(l)}$

Nitric Acid + Magnesium Hydroxide ￫ Magnesium Nitrate + Water
$H N O_{3} + M g (O H)_{2} \to M g N O_{3} + H_{2} O$ (Unbalanced)
$2 H N O_{3 (a q)} + M g (O H)_{2 (a q)} \to M g (N O_{3})_{2 (a q)} + 2 H_{2} O_{(l)}$ (Balanced)

-acid + carbonate (-> salt + water + carbon dioxide gas)
Important Note: Carbonates have a valency of $2 -$

Sulfuric Acid + Copper (II) Carbonate -> Copper Sulfate + Water + Carbon Dioxide Gas
$H_{2} S O_{4 (a q)} + C u C O_{3 (s)} \to C u_{4} S O_{4 (a q)} + H_{2} O_{(l)} + C O_{2 (g)}$

Hydrochloric Acid + Magnesium Carbonate -> Magnesium Chloride + Water + Carbon Dioxide Gas
$2 H C l_{(a q)} + M g C O_{3 (s)} \to M g C l_{2 (a q)} + H_{2} O_{(l)} + C O_{2 (g)}$

-acid + metal (-> salt + hydrogen gas)
Hydrochloric Acid + Magnesium -> Magnesium Chloride + Hydrogen Gas
$2 H C l_{(a q)} + M g_{(s)} \to M g C l_{2 (a q)} + H_{2 (g)}$

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2.3 Chemical Equations

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