CBSE Class 11-science Answered
Mass of CaO obtained by hearing 20kg of 90% pure lime stone
Asked by | 21 Mar, 2013, 10:28: AM
Expert Answer
The relevant equation is
CaCO3 = CaO + CO2
100 g 56 g 44g
Lime stone contains 95% CaCO3
200 kg of limestone contains= 95 x 200/100 = 190Kg CaCO3
100 g of limestone on heating gives = 56 g CaO
190 kg gives= 56 x 190 x 103 /100 = 106400g of CaO or 106.4 kg of CaO
Answered by | 23 Apr, 2013, 12:10: PM
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