Is there evolution of heat when cao reacts with h2o?
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Yes heat is evolved when CaO reacts with H2O
CaO+H2O=Ca(OH)2+ heat
This is exothermic reaction
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cao +h2o-----≥ca(oh)2
these mixture are added to water to lime(cao)
and heat the evolution of the energy as a heat is evidence because of the mixture become warm and these reaction are exothermic
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