Question

1. Which type of reaction is the reverse of a decomposition reaction?

A. Combustion
B. Synthesis
C. Double-replacement
D. Single-replacement

Answer 1

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Actually Welcome to the Concept of the Chemistry.

The reaction that Is opposite of the decomposition is

==> Synthesis Reaction.

==> Catalyst always Speeds up any reaction, so that it quickly reaches to it's Equilibrium point and gets stabilize.