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Chemical Reactions and Equations
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02/09/2021 10:51 am
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(a) Define a combination reaction.
(b) Give one example of a combination reaction which is also exothermic.
(c) Give one example of a combination reaction which is also endothermic.
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02/09/2021 10:55 am
(a) Those reactions in which two or more substances combine to form a single substance is called a combination reaction.
(b) CaO + H2O → Ca(OH)2 + Heat
As heat is released in this reaction, so it is exothermic reaction.
(c) Nitrogen burns in air to form nitric oxide.
N2(g) + O2(g) → 2NO(g)
Heat is absorbed during this reaction.