Multiple Choice
During the combustion of methane (CH_4) to form water (H_2O) and carbon dioxide (CO_2), which bonds in the reactants are broken?
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3. Chemical Reactions
Combustion Analysis
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Which of the following is NOT a product formed when magnesium ribbon is combusted in air?
A
MgO
B
Mg_3N_2
C
CO_2
D
N_2
Verified step by step guidance1
Step 1: Understand the reaction conditions. When magnesium ribbon is combusted in air, it reacts primarily with oxygen (O_2) and nitrogen (N_2) present in the air.
Step 2: Identify the products formed. Magnesium reacts with oxygen to form magnesium oxide (MgO) and with nitrogen to form magnesium nitride (Mg_3N_2). These are common products of magnesium combustion in air.
Step 3: Analyze the given options. MgO and Mg_3N_2 are known products of magnesium combustion. N_2 is a component of air but does not form a product by itself in this reaction; it is a reactant.
Step 4: Consider CO_2 (carbon dioxide). Since magnesium combustion involves only magnesium, oxygen, and nitrogen, and no carbon source is present, CO_2 cannot be formed as a product.
Step 5: Conclude that CO_2 is NOT a product of magnesium combustion in air, while MgO and Mg_3N_2 are products formed during the reaction.
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