Question

Write the chemical equations involved in the following chemical reactions :

(i) White washing.

(ii) ***** and white photography.

Answer 1

(i) In white washing, quicklime reacts with water to form slaked lime.

CaO+H2O → Ca(OH)2+Heat

CaO+H2O-**Quick lime**

Ca(OH)2 -Slaked lime

(ii) Silver bromide, when exposed to light decomposes to silver and bromine.

2AgBr() +sunlight → 2Ag()+Br2(g)

*2AgBr()-Silver bromide**

*2Ag()-Silver**

Br2(g)- Bromide