Which of the following represents a decomposition reaction?

$A + B H e a t - -- \to A B$

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$A + B H e a t - -- \to B + C$

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$A B H e a t - -- \to A + B$

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$A + B + C H e a t - -- \to X + Y$

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Solution

The correct option is C
$A B H e a t - -- \to A + B$

In a decomposition reaction, a single compound splits up due to the application of heat into two or more simpler substances.
For example: In the reaction $2 A g C l (s) \to 2 A g (s) + C l_{2} (g)$ , silver chloride decomposes into silver and chlorine.

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I E_{1}

∣ ∣ ∣ ∣ \begin{matrix} - 2 a & a + b & a + c a + b & - 2 b & b + c c + a & c + b & - 2 c \end{matrix} ∣ ∣ ∣ ∣ = 4 (a + b) (b + c) (c + a)

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