15 ! используя периодическую систему элементов д. и. менделеева, определите состав атома гелия.*

Question

Химия: 15 ! используя периодическую систему элементов д. и. менделеева, определите состав атома гелия.*

Olya199701 · Accepted Answer

1. C2H6 + Br2 = C2H5Br + HBr
C2H5Br + NaOH = C2H5OH + NaBr
C2H5OH + CH3COOH ---(H2SO4)---> CH3COOC2H5 + H2O
CH3COOC2H5 + NaOH = CH3COONa + C2H5OH
CH3COONa + NaOH + t (сплав) = CH4 + Na2CO3 CH4 + t = C2H2
C2H2 + HCl = CH2=CH-Cl nCH2=CH-Cl = [-CH2-CH(Cl)-]n

2. CH3COOCH3 ---(NaOH/H2O)---> CH3COONa + CH3OH
CH3OH + O2 ---(V2O5/t)---> HCOH + H2O
HCOH + [Ag(NH3)2]OH = Ag + HCOOH + H2O + 2NH3
HCOH ---(H2/Ni)---> CH3OH
CH3OH + C2H5COOH ---(H2SO4)---> C2H5COOCH3 + H2O
C2H5COOCH3 + NaOH (водн) = C2H5COONa + CH3OH
C2H5COONa + NaOH + t (сплав) = C2H6 + Na2CO3

3. C3H7OH ---(Cu/t)---> C2H5CHO + H2
C2H5CHO + Cu(OH)2 = C2H5COOH + Cu2O
C2H5COOH + C2H5OH ---(H2SO4)---> C2H5COOC2H5
C2H5COOC2H5 + NaOH (водн) = C2H5COONa + C2H5OH

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