What happens when

(i) magnesium is burnt in air

(ii) quick lime is heated with silica

(iii) chlorine reacts with slaked lime

(iv) calcium nitrate is heated ?

Asked by Pragya Singh | 1 year ago |  41

##### Solution :-

(i) When Magnesium is burnt in air, it does so with a dazzling bright light resulting in the formation of Mg3N2 and MgO.

2Mg + O2 $$\overset{Burning}{\rightarrow}$$ 2MgO

3Mg + N$$\overset{Burning}{\rightarrow}$$ Mg3N2

(ii) Silica (SiO2) combines with Quick lime (CaO) resulting in formation of Slag.

CaO + SiO2 $$\overset{Heat}{\rightarrow}$$→CaSiO3

(iii) Bleaching powder is formed when chlorine is made to react with slaked lime.

Ca(OH)2 + Cl2 $$\overset{Heat}{\rightarrow}$$ CaOCl2 + H2O

(iv) Calcium nitrate, when heated, undergoes decomposition to form calcium oxide.

2Ca(NO3)2(s) $$\overset{Heat}{\rightarrow}$$ 2CaO(s) + 4NO2(g) + O2(g)

Answered by Abhisek | 1 year ago

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