Răspuns :
MAl2(SO4)3=27*2+3(32+16*4)=342g/mol
MCa(OH)2=40+2(16+1)=74g/mol
MAl(OH)3=27+3(16+1)=78g/mol
342g..............3*74g............2*78g
Al2(SO4)3 + 3Ca(OH)2 -->2Al(OH)3 + 3CaSO4
xg..................7.4g
x=2530.8/222=11.4g.............yg
y=2*78*(7.4+11.4)/564=2932.8/564=5.2 g Al(OH)3
MCa(OH)2=40+2(16+1)=74g/mol
MAl(OH)3=27+3(16+1)=78g/mol
342g..............3*74g............2*78g
Al2(SO4)3 + 3Ca(OH)2 -->2Al(OH)3 + 3CaSO4
xg..................7.4g
x=2530.8/222=11.4g.............yg
y=2*78*(7.4+11.4)/564=2932.8/564=5.2 g Al(OH)3