Кетоны получают нагреванием солей кальция и карбоновых кислот.
(CH3COO)2Ca—> CaCO3+CH3-C(O)-CH3. (t)
CxHy
Mr(CxHy) = D*M(H2) = 13*2 = 26
x:y = 92.23/12 : 7.77/1 = 7.6858 : 7,77 = 1/1 СН
Mr(CH) = 12+1 = 13
Mr(CxHy) /Mr(CH) = 26/13 = 2
C2H2
CH4 -> CH3Br -> C2H6 -> C2H4 -> C2H2 -> C6H6
<span>CH4+Br2[свет] -> CH3Br+HBr </span>
<span>2CH3Br +2Na-> C2H6 +2NaBr </span>
<span>C2H6 [Al2O3]-> C2H4+H2 </span>
<span>C2H4 [Al2O3]-> C2H2 +H2 </span>
2C2H2[C,t ] -> C6H6<span>
</span>
М=Vm*p => p=M/V =30/22.4=1.34
D (возд)=М(NO)/M (возд)=30/29=1,03