Question Detail

CHM 101 General Chemistry Objective Question
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Question

Which of the following is an example of a decomposition reaction?
Options
A 2Mg + O2 → 2MgO
B CaCO3(s) → CaO(s) + CO2(g)
Correct Answer
C Zn + CuSO4(aq) → ZnSO4(aq) + Cu(s)
D 2KI(aq) + Pb(NO3)2(aq) → 2KNO3(aq) + PbI2(s)
Correct Answer

Option B is the correct answer.

Detailed Explanation

CaCO3(s) → CaO(s) + CO2(g) is a decomposition reaction where one compound breaks down into two simpler products.

Hint

Look for the reaction where one compound splits into multiple products.

Question Info

Course: CHM 101
Topic: General Chemistry
Type: Objective
Difficulty: Not specified
Question 447 of 1872
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