If 500,000g of limestone is heated up, what is the mass of CaO? CaCO3 = CaO + CO2

1 Answer
anor277
May 27, 2017

Well we have the stoichiometric equation........and we get over #280# #"kg"# of calcium oxide..........

Explanation:

#CaCO_3(s) + Delta rarr CaO(s) + CO_2(g)#

And, clearly, there is 1:1 molar relationship between the limestone and calcium oxide product........

#"Moles of calcium carbonate"=(500xx10^3*g)/(100.09*g*mol^-1)=5.00xx10^2*mol#

#"Mass of calcium oxide"=5.00xx10^3*molxx56.08*g*mol^-1#

#=280.1xx10^3*g-=280# #"kg"#

For what would we typically use this quantity of #"quicklime"#?

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