Question

question 9
1 pts
what type of reaction is mnso₄→mno + so₃?
combustion
double - displacement
decomposition
single - displacement
question 10
1 pts
which of the following statements about decomposition reactions is true?
decomposition and combustion reactions are the same thing.
decomposition and single - displacement reactions are the same thing.
decomposition reactions are essentially the opposite of single - displacement reactions.
decomposition reactions are essentially the opposite of synthesis reactions.

Explanation:

Question 9

• Combustion reactions involve a substance reacting with oxygen (usually).
• Double - displacement reactions have the form \(AB + CD

ightarrow AD+CB\).

• Single - displacement reactions have the form \(A + BC

ightarrow AC + B\).

• Decomposition reactions have the form \(AB

ightarrow A + B\). In the reaction \(MnSO_{4}
ightarrow MnO+SO_{3}\), one compound (\(MnSO_{4}\)) breaks down into two simpler substances (\(MnO\) and \(SO_{3}\)), which is characteristic of a decomposition reaction.

• Combustion reactions involve reaction with oxygen, while decomposition reactions involve a single compound breaking down. So they are not the same.
• Single - displacement reactions involve an element displacing another in a compound (\(A + BC

ightarrow AC + B\)), decomposition reactions involve a compound breaking into simpler substances (\(AB
ightarrow A + B\)).

• Synthesis reactions have the form \(A + B

ightarrow AB\), decomposition reactions have the form \(AB
ightarrow A + B\). They are opposite in nature.

Answer:

decomposition

Question 10