Why are decomposition reaction called the opposite of combustion reaction ? write equations for these reaction
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In a combination reaction two or more substances are combined to form new substance while in the decomposition reaction one substance decomposes into two or more substances. Hence, the decomposition reactions are called opposite of combination reactions.
CaCO3 (s) ⇨ CaO (s) + CO2 (g) Decomposition reaction
H2 (g) + Cl2 ⇨ 2HCl (g) Combination reaction
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In a combination reaction two or more substances are combined to form new substance while in the decomposition reaction one substance decomposes into two or more substances. Hence, the decomposition reactions are called opposite of combination reactions.
CaCO3 (s) ⇨ CaO (s) + CO2 (g) Decomposition reaction
H2 (g) + Cl2 ⇨ 2HCl (g) Combination reaction
Hope it help
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