GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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MgCo3
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SO3 + H2O
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2 Mg + O2
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None of the above
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Detailed explanation-1: -Answer and Explanation: We can see in the above reaction that magnesium oxide reacts with carbon dioxide to form magnesium carbonate. In this reaction, two reactants combined together to form only one product. This type of reaction is known as a combination reaction.
Detailed explanation-2: -Since the above chemical reaction involves the formation of two products, i.e., MgO M g O and CO2 C O 2 from a single reactant MgCO3 M g C O 3, therefore, this reaction is a decomposition reaction.
Detailed explanation-3: -The chemical equation for the decomposition of magnesium carbonate is as follows: MgCO₃ (s) + 117 kj ⟶ MgO (s) + CO₂ (g).
Detailed explanation-4: -The MgO is spread over land to react with atmospheric CO2 to form magnesite (MgCO3) and other Mg-carbonate minerals over the course of a year.