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Calculate the mass of CaO formed from 25...

Calculate the mass of `CaO` formed from `25g` of `CaCO_(3)` on strong heating (mol.mass of `CaCO_(3)=100" and "CaO=56`).

Text Solution

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`Ca CO _(3 (s)) overset(Delta )to Ca O _((s)) + CO _(2) (g)`
Number of moles of `Ca CO _(3) = ( "Mass of" Ca CO _(3))/( "Mol mass of" Ca CO _(3)) = ( 25)/(100) = 0. 25`
Molar ratio of `Ca CO _(3) and Ca O = 1:1` (from equation)
Number of moles of `CaO = 0. 25 ((1)/(1)) = 0. 25`
Mass of CaO formed `= 0. 25 xx 56 = 14 g `
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