50 g oxid impur.........................100%
x .........................................92% (100-8imuritati) = puritatea
x= 46 g Ca(OH)2 pur
Ca(OH)2 + CO2 = CaCO3 + H2O
M(Ca(OH)2) = A(Ca) + 2A(O) + 2 A(H) = 40+2*16+2*1=74
74 g Ca(OH)2 ...........22,4 L CO2
46 g Ca(OH)2....................x
x = 13,92 L CO2