Question

hydrogen, when combined with oxygen in a chemical reaction, forms water. this is an example of which type of chemical reaction?
o double - displacement
synthesis
single - displacement
decomposition
question 8
1 pts
which of the following best describes why mnso4→mno + so3 is not a synthesis reaction?
o the equation is not balanced.
o energy is not a product in this reaction?
o oxygen is not a reactant in this reaction.
o the reaction has more than one product.

Explanation:

• First question:
• A synthesis reaction is a reaction where two or more reactants combine to form a single product. In the reaction \(2H_{2}+O_{2}

ightarrow 2H_{2}O\), hydrogen (\(H_{2}\)) and oxygen (\(O_{2}\)) (two reactants) combine to form water (\(H_{2}O\)) (a single product).

• A double - displacement reaction has the general form \(AB + CD

ightarrow AD+CB\). A single - displacement reaction has the form \(A + BC
ightarrow AC + B\). A decomposition reaction has the form \(AB
ightarrow A + B\).

• Second question:
• A synthesis reaction has the general form \(A + B

ightarrow AB\) (one product). In the reaction \(MnSO_{4}
ightarrow MnO+SO_{3}\), there are two products (\(MnO\) and \(SO_{3}\)).

• The balance of the equation is not the reason it is not a synthesis reaction. Energy being a product or not is not the defining characteristic of a synthesis reaction. Oxygen being a reactant is not the key factor for a reaction to be a synthesis reaction (e.g., \(2Mg + N_{2}

ightarrow 2MgN\) is a synthesis reaction without oxygen as a reactant).

Answer:

• First question: synthesis
• Second question: The reaction has more than one product.