Question

Which of the following is an example of synthesis reaction?

• A. 8Fe + S₈ à 8FeS
• B. Mg + 2H₂O à Mg(OH)₂ + H₂
• C. HBr + NaOH à NaBr + H₂O
• D. None of these

Answer 1

The correct option is A

8Fe + S₈ à 8FeS

$8Fe+S_8\to 8FeS$ is an example of synthesis reaction.
A synthesis reaction is a reaction in which two or more substances combine to form a new compound. When two elements combine in a synthesis reaction, the only product that can be made is a binary compound. A binary compound is a compound composed of only two elements: $A+B\to AB$