Question

Express your answer as a complete chemical equation, with reactants and products. Identify all of the phases in your answer. (a salt formed with the Fe and the hydroxide anion will usually precipitate, while all salts formed with the chloride ion remain aqueous) a) Decomposition: NaCl(s)→ __________________ b) Combination: Ca(s)+Br2(g)→ __________________ c) Combustion: C2H4(g)+O2(g)⟶ __________________ d) Double replacement: FeCl2(aq)+KOH(aq)→ __________________

Answer 1

You may find bellow the balanced chemical reactions.

Explanation:

a) Decomposition: 2 NaCl (s) → 2 Na (s) + Cl₂ (g)

b) Combination: 2 Ca (s) + Br₂ (g) → 2 CaBr (s)

c) Combustion: C₂H₄ (g) + 3 O₂ (g) → 2 CO₂ (g) + 2 H₂O (g)

d) Double replacement: FeCl₂ (aq) + 2 KOH (aq) → Fe(OH)₂ (s) + 2 KCl (aq)

where:

(s) - solid

(g) - gas

(aq) - aqueous

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balancing chemical reactions

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