Question

In certain fireworks, potassium nitrate breaks down into potassium oxide, nitrogen, and oxygen. This is an example of a _____ reaction. The opposite process is a _____ reaction.
options for both of the blanks are
A) combustion
B) decomposition
C) replacement
or D) synthesis

Answer 1

I believe the correct answers from the choices listed above are option B and option D. This is an example of a decomposition reaction. The opposite process is a synthesis reaction. I am 100% sure with this. Hope this helps. Have a nice day.

Answer 2

Answer:

Decomposition and Synthesis

Explanation:

The reaction of decomposition and synthesis are two of the important reaction. The decomposition reaction is usually defined as the reaction by which a bigger compound (molecule) is broken into smaller molecules. For example:

2KNO₃ ------> K₂O + N₂O + O₂

On the other hand,  the synthesis reaction is defined as the reaction that accumulates smaller molecules and transforms into a larger compound (molecule). For example:

K₂O + N₂O + O₂ -------> 2KNO₃

Thus, the correct answers are options (B) and (D), i.e. Decomposition and Synthesis.