Q16 of 152 Page 45

What type of reactions are represented by the following equations ?

(i) CaC03CaO + CO2


(ii) CaO + H2OCa(OH)2


(iii) 2FeSO4Fe2O3 + SO2 + SO3


(iv) NH4CINH3 + HCl


(v) 2Ca + O22CaO

(i) Decomposition Reaction.

(ii) Combination Reaction.


(iii) Decomposition Reaction.


(iv) Decomposition Reaction.


(v) Combination Reaction.



More from this chapter

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13 Write one equation each for the decomposition reactions where energy is supplied in the form of (a) heat, (b) light, and(c) electricity. 14 In the refining of silver, the recovery of silver from silver nitrate solution involved displacement by copper metal. Write down the chemical equation of the reaction involved. 16 What type of chemical reactions take place when:

(a) a magnesium wire is burnt in air?


(b) lime-stone is heated?


(c) silver bromide is exposed to sunlight


(d) electricity is passed through water?


(e)ammonia and hydrogen chloride are mixed?

 17 What type of chemical reactions are represented by the following equations?

(i) A + BCAC + B


(ii) A + B C


(iii) X Y + Z


(iv) PQ + RS PS + RQ


(v) A203 + 2B B203 + 2A