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Which of these equations represents a double displacement chemical reaction?


AB ---> A + B


A + BX ---> AX + B


AX + BY ---> AY + BX


A + B ---> AB

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Answer:

3rd option: AX + BY ⇒ AY + BX

Explanation:

The 2nd option is a single displacement reaction where one bound atom is displaced.

Logically, it would follow that a double displacemnt would be one where two bound atoms, i.e. X and Y, are displaced.

Answer:

AX + BY ---> AY + BX

Explanation:

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