Решить цепочку ca-x1-x2-этаналь( [ag(nh3)2]oh )-x3( ca(oh)2 ) - x4

Ca+2C(кокс)-->CaC2 (t)
CaC2+2H2O-->Ca(OH)2+C2H2
C2H2+H2O-->CH3CHO (кат. HgSO4/H2SO4)
CH3CHO+2[Ag(NH3)2]OH-->CH3COOH+2Ag↓+4NH3↑+H2O
2CH3COOH+Ca(OH)2-->(CH3COO)2Ca+2H2O