EXplain the chemical reaction involved in whitewhashing. Why do walls get a shine after a few days of whitewhashing?
Asked by | 30th Aug, 2010, 12:00: AM
When Lime or calcium oxide is dissolved in a large amount of water It forms a white solid called Calcium Hydroxide or slaked lime which is applied on walls and specially roof .
CaO + H 2O---->Ca(OH) 2
This reacts slowly with carbon dioxide of air and forms a thin shining layer of calcium carbonate.
Ca(OH)2 +CO2 --->CaCO3+ H2O
Answered by | 30th Aug, 2010, 06:57: PM
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