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Given the equation representing a reaction: 2NaCl → 2Na + Cl2 Which type of reaction does this equat

NY Regents Chemistry Exam Jan 2023


Given the equation representing a reaction: 2NaCl → 2Na + Cl2 Which type of reaction does this equation represent? (1) double replacement

(2) decomposition (3) synthesis (4) single replacement


Solution: Here are some easy ways to recognize each reaction.

Double replacement is AB + CD --> AD + CB,

Decomposition is AB --> A + B

Synthesis is A+B --> AB

Single Replacement is A +BC --> AC + B

The reaction represented above is decomposition, choice 2.


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