(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(s) +sunlight → 2Ag(s)+Br2(g)
2AgBr(s)-Silver bromide
2Ag(s)-Silver
Br2(g)- Bromide
(i) Chemical name -Sodiurn carbonate decihydrate
Formula - Na2CO3.10H2O
(ii) NaCl+H2O+CO2+NH3 → NH4Cl+NaHCO3.
2NaHCO3+ Heat →Na2CO3+CO2↑+H2O
NaCO3+10H2O → Na2CO3.10H2O
(iii) It is a basic salt because when dissolved in water, it gives a strong base NaOH.
It is used as a cleaning agent,...
(ii), [Hint: If added substance dissolves, the solution is unsaturated. If it does not dissolve solution is saturated. If precipitation occurs solution is supersaturated.]