Question

give some examples when combination reaction is an endothermic..and when decomposition reaction is an exothermric..


don't give any irrelevant answer.​

Answer 1

Answer:

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Explanation:

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combination reaction---->endothermic

example :burning of magnesium ribbon

decomposition reaction ---> exothermic

examples: respiration ,breakdown of glucose and release of heat

Answer 2

Answer:

When quicklime or calcium oxide (CaO) reacts with water, slaked lime [Ca(OH)² ] is formed. During this reaction, a large amount of heat is released. So, this reaction is an exothermic Reaction.

CaO(s) H2O(I) Ca(OH)2(aq)+heat

CaO(s) = calcium oxide ( quick lime)

H2O(I)= water

Ca(OH)2(aq)+heat= calcium hydroxide ( slaked lime )

Explanation:

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