Нужна помощь, даю 40 б.

дано

m(CnH2n+2OH) = 30 g

V(H2) = 5.6 L

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CnH2n+1OH - ?

2CnH2n+1OH+2Na-->2CnH2n+2ONa+H2

M(CnH2n+1OH) = (14n+18) g/mol

Vm = 22.4 L/mol

30 / 2(14n+18) = 5.6 / 22.4

30 / 28n+36 = 5.6 / 22.4

30*22.4 = 5.6(28n+36)

672 = 156.8n + 201.6

n = 3

C3H7OH

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