\(n_{Cu\left(OH\right)2}=\frac{9,8}{98}=0,1\left(mol\right)\)
\(n_{glixerol}=2n_{Cu\left(OH\right)2}=0,2\left(mol\right)\)
\(\Rightarrow m_{glixerol}=0,2.92=18,4\left(g\right)\)
\(\Rightarrow m_X=30,4-18,4=12\left(g\right)\)
\(C_3H_5\left(OH\right)_3+3Na\rightarrow C_3H_5\left(ONa\right)_3+\frac{3}{2}H_2\)
0,12_______________________________0,3
\(\Sigma n_{H2}=0,4\left(mol\right)\Rightarrow\) X tạo 0,1mol H2
\(C_nH_{2n}+1OH+Na\rightarrow C_nH_{2n+1}ONa+\frac{1}{2}H_2\)
0,2__________________________________0,1
\(\Rightarrow M_X=\frac{12}{0,2}=60\Rightarrow14n+18\)
\(\Leftrightarrow n=3\left(C_3H_8O\right)\)
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