Question 50 of 63
Q.Explain why Ca(OH)2 is used in white washing.
Puducherry TnboardTamil Nadu HSC First Year (DGE) Board 2019Subjective· 3mImportance★★★★★
79% · 50/63 Questions
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Start your 14-day free trial to unlock the full solution →Whitewashing works because Ca(OH)2 slowly absorbs atmospheric CO2 and converts to a hard, shiny, insoluble CaCO3 coating.
White washing involves applying a paste/suspension of slaked lime, Ca(OH)2, in water onto a wall surface. Once applied, the calcium hydroxide slowly reacts with carbon dioxide present in the atmosphere:
Ca(OH)2 + CO2 → CaCO3 + H2O
…
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