Which of the following is an example of a chemical combination reaction? A) C + O₂ → CO₂ B) HCl + KOH → H₂O + KCl C) CaCO₃ → CaO + CO₂ D) Cu(NO₃)₂ + K₂S → CuS + 2KNO₃ Which of the following is an example of a chemical combination reaction? A) C + O₂ → CO₂ B) HCl + KOH → H₂O + KCl C) CaCO₃ → CaO + CO₂ D) Cu(NO₃)₂ + K₂S → CuS + 2KNO₃
Understand the Problem
The question is asking to identify which reaction among the given options is a chemical combination reaction. A chemical combination reaction is one where two or more substances combine to form a single new substance.
Answer
C + O₂ → CO₂
The final answer is A) C + O₂ → CO₂
Answer for screen readers
The final answer is A) C + O₂ → CO₂
More Information
A combination reaction is where two or more substances combine to form a single new product. In the reaction C + O₂ → CO₂, carbon and oxygen are combining to form carbon dioxide, fitting the description of a combination reaction.
Tips
A common mistake is confusing combination reactions with other types like decomposition or displacement reactions. Remember, a combination reaction results in a single product.
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