0,8*500=400g CaC2
n=m/M=400/64=6,25 moli CaC2 pur
CaC2(s) + 2H2O(l) => C2H2(g) + Ca(OH)2(s)
nCaC2 = nC2H2 = 6,25 moli
VC2H2 = 6,25*22,4 = 140L
C2H2 + H2O ---(HgSO4/H2SO4) ----> CH2=CH-OH ---tautomerie (reacția Kucerov) --- > H3C-CH=O
nt = 6,25 moli acetaldehidă
np=90*6,25/100=5,625 moli C2H4O
m C2H4O = 5,625*44 = 247,5g