Question

Name the product formed when
water is added to Cao
O a) Naci
O b) Lime water
O c) Lime stone
O d) None of these​

Answer 1

Hi mate

The formation of slaked lime (calcium hydroxide, Ca(OH)2) when water is added to lime (CaO) is exothermic. CaO(s) + H2O (l) → Ca(OH)2(s) This reaction occurs when water is added to dry portland cement to make concrete, and heat evolution of energy as heat is evident because the mixture becomes warm.