Ta có:
\(n_{H2}=\frac{2,24}{22,4}=0,1\left(mol\right)\)
\(CH_3COOH+Na\rightarrow CH_3COONa+H_2\)
0,1_______________________________0,1
\(CH_3CH_2CHO+Na\underrightarrow{^X}\)
\(m_{CH3COOH}=0,1.64=6,4\left(g\right)\)
\(m_{CH3CH2CHO}=18,6-6,4=12,2\left(g\right)\)
\(CH_3CH_2CHO+H_2O+Br_2\rightarrow C_2H_5COOH+2HBr\)
0,2___________________0,2____________________0,9
\(\Rightarrow m_{Br2}=0,2.80.2=32\left(g\right)\)
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