дано
m(H2O) = 7.2 g
m(CnH2n+1 OH) = 40.8 g
CnH2n)-?
CnH2n+H2O-->CnH2n+1 OH
M(CnH2n) = 12n+2n = 14 n g/mol
M(CnH2n+1 OH) = 12n+2n+1+17 = 14n+18 g/mol
M(H2O) = 18 g/mol
n(H2O) = m/M = 7.2 / 18 = 0.4 mol
n(CnH2n+1OH) = m/M = 40.8 / (14n+18) g/mol
n(H2O) = n(CnH2n+1 OH)
0.4 = 40.8 / 14n+18
0.4 * (14n+18) = 40.8
5.6n+7.2 = 40.8
5.6 n = 33.6
n = 6
C6H13OH
C6H12 + H2O-->C6H13OH
H3C - CH2 - CH2 - CH2 - CH2 - CH3 - n - гексан
H3C - CH2 - CH - CH2 - CH3
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CH3 3- метилпентан
ответ ГЕКСЕН
Объяснение:
