(a) give an example for a combination reaction thats exothermic.

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Solution

Combination reactions are alwaysexothermic. For example barium metal and fluorine gas will combine in a highly exothermic reaction to form the salt barium fluoride: Another exampleis given by magnesium oxidecombining with carbon dioxide

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Question 3

Define combination reaction. Give an example of a combination reaction that is also exothermic.

C + O_{2} \to {CO}_{2} + Heat

2 P b (N O_{3})_{2} (s) H e a t - -- \to 2 P b O (s) + 4 N O_{2} (g) + O_{2} (g)

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