Question

4. Identify the type of chemical reaction .
(a) C + O2 + CO2
(b) CaCO3 – Cao + có 2
(c) HCl + NaOH + NaCl + H
H 2°​

Answer 1

Answer:IDK

Explanation: i am sorry

Answer 2

Answer:

(a) Another special type of combination reaction is a combustion, meaning a reaction in which something combines with oxygen and gives off heat and light: C + O2 → CO2 2 Mg + O2 → 2 MgO Combustion of a compound includes break-up (decomposition) of the compound first.

(b). Decomposition: A substance breaks down to smaller species. [e.g. CaCO3(s) → CaO(s) + CO2(g) Decomposition of limestone to calcium oxide (quicklime) and carbon dioxide on heating

(c). This reaction involve an acid (HCl) reacting with a base (NaOH), producing a salt (NaCl) and water. Therefore it's a neutralization reaction

Explanation:

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