[ريهام اسامة]

Cac2+h2o-----cold---- c2h2+ca(oh)2
c2h2+h2--------------c2h4
c2h4+h2so4---80------ ch3_ch2_oso3h
ch3_ch2_oso3h+h2so4-----110---c2h5oh+h2so4