Question

Ce cantitate de dioxid de carbon reactioneaza cu 12g solutie 26% de hidroxid de calciu pentru a forma carbonat de calciu?
A Ca-40 A C-12 AO-16 AH-1

Answer 1

      
            Xg        3,12 g                                                 MCO2=12+2.16=44
           CO2 +Ca(OH)2 =CaCO3 +H2O                     MCa(OH)2 =40+2.16+
           44g     74g                                                             +2=74




intr-o reactie chimica ,dintr-o solutie, reactioneaza numai  md

c=md.100:ms
md=c.ms:100
 md=26.12:100=3,12 g Ca(OH)2

x=44.3,12:74=1,85 g CO2