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Question

When methane (CH4) burns completely in the presence of sufficient oxygen, which products are formed?

The correct answer is
Carbon dioxide and water

Methane Combustion Products Explained

Complete combustion of methane ($CH_4$) occurs when it reacts with a sufficient supply of oxygen ($O_2$). This reaction involves the complete breakdown of the methane molecule.

The balanced chemical equation for this reaction is:

$CH_4(g) + 2O_2(g) \rightarrow CO_2(g) + 2H_2O(g)$

Based on the balanced equation, the products formed from the complete combustion of methane are:

  • Carbon dioxide ($CO_2$)
  • Water ($H_2O$)

Conditions that limit oxygen supply would lead to incomplete combustion, potentially forming carbon monoxide ($CO$) or solid carbon ($C$). However, under the condition of sufficient oxygen, only carbon dioxide and water are produced.

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