Fewpal
+1 vote
469 views
in Chemistry by (127k points)
edited by
Why are decomposition reactions called the opposite of combination reactions? Write equations for these reactions.

1 Answer

+2 votes
by (13.5k points)
selected by
 
Best answer

Decomposition reactions are those in which a compound breaks down to form two or more substances. These reactions require a source of energy to proceed. Thus, they are the exact opposite of combination reactions in which two or more substances combine to give a new substance with the release of energy.

Decomposition Reaction: 

Combination Reaction:
CaO (s) + H2O (l) → Ca(OH)2 (aq)

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...