Question

Of which type is each of the following reactions?(a) CaO + H2O --> Ca(OH)2 + Heat(b) C + O --> CO2(c) CI2 + H2 --> 2HCI(d) 2Mg + O2 --> 2MgO

Answer 1

exothermic reaction..........

Answer 2

(a) Here the heat is given out hence it is an example of exothermic reactions.

(b) Here which two elements combined together to form a single compund hence, this is an example of combination reaction.

(c) Here which a single substance is formed hence this reaction is also an example of combination reaction.