Answer:
a. decomposition reaction
b. Combustion reaction
c. Combination reaction
d. Single displacement reaction
e. Decomposition reaction
Explanation:
Here's a tip that might help you get through categorizing chemical reactions like this:
A combination reaction is when two or more reactants COMBINE to form a single product. This is also known as synthesis reaction. If you look a the chemical equation, it will have a form somewhat like this:
Reactant/s Product
A + B → AB
Taking your problem into consideration, letter c is a combination reaction because it started out as two reactants and combined to form one product.
P₄O₁₀ + 6H₂O → 4H₃PO₄
Reactants Product
A decomposition reaction is when one reactant DECOMPOSES or breaks down into two or more products.
Reactant Product
AB → A + B
Your problem has 2 decomposition reactions, which are letters, a and e because if you notice, you have one reactant and it split into two products.
Fe₂(CO₃) → Fe₂O₃ + 2CO₂
Reactant Product
2NaClO₃ → 2NaCl + 3O₂
Reactant Product
A single displacement reaction is when one element or compound is displaced by another element or compound.
Reactants Product
AB + C → AC + B
or
A + BC → AC + B
Your problem has letter d as your example of single-displacement.
2C + MnO₂ → Mn + 2CO₂
A + BC → B + AC
Reactant Product
A combustion reaction on the other hand occurs when hydrocarbons react with oxygen and heat. The product of a combustion reaction is ALWAYS carbon dioxide (CO₂) and water (H₂O).
Reactants Product
Hydrocarbon + O₂ → CO₂ + H₂O
Lastly, your problem has letter b as an example of a combustion reaction. Notice that the product of the reaction is CO₂ and H₂O.
2C₆H₁₁OH + 17O₂ → 12CO₂ + 6H₂O
Hydrocarbon + O₂ → CO₂ + H₂O
These clues might help you next time.
