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\(n_{CO2}=\dfrac{11,2}{22,4}=0,5\left(mol\right)\)
Pt : \(C_6H_{12}O_6\xrightarrow[30-35^oC]{Menrượu}2C_2H_5OH+2CO_2\)
0,5 0,5
a) \(m_{C2H5OH}=0,5.46=23\left(g\right)\)
b) Pt : \(C_2H_5OH+O_2\xrightarrow[]{Mengiấm}CH_3COOH+H_2O\)
0,5 0,5
\(m_{CH3COOH\left(lt\right)}=0,5.60=30\left(g\right)\)
⇒ \(m_{CH3COOH\left(tt\right)}=30.80\%=24\left(g\right)\)
Chúc bạn học tốt
\(C_6H_{12}O_6\underrightarrow{t^o}2C_2H_5OH+2CO_2\uparrow\)(xt : men rượu )
0,5 0,5
\(n_{CO_2}=\dfrac{11,2}{22,4}=0,5\left(mol\right)\)
\(m_{C_2H_5OH}=0,5.46=23\left(g\right)\)
\(C_2H_5OH+O_2\underrightarrow{t^o}CH_3COOH+H_2O\) (men giấm )
0,5 0,5
\(m_{CH_3COOH}=0,5.60=30\left(g\right)\)
\(m_{CH_3COOHtt}=30.80\%=24\left(g\right)\)
a, \(n_{CH_3COOH}=0,2.1=0,2\left(mol\right)\)
PT: \(Mg+2CH_3COOH\rightarrow\left(CH_3COO\right)_2Mg+H_2\)
Theo PT: \(n_{Mg}=n_{H_2}=\dfrac{1}{2}n_{CH_3COOH}=0,1\left(mol\right)\)
\(\Rightarrow m=m_{Mg}=0,1.24=2,4\left(g\right)\)
\(V=V_{H_2}=0,1.22,4=2,24\left(l\right)\)
b, \(C_2H_5OH+O_2\underrightarrow{^{mengiam}}CH_3COOH+H_2O\)
Theo PT: \(n_{C_2H_5OH}=n_{CH_3COOH}=0,2\left(mol\right)\)
\(\Rightarrow m_{C_2H_5OH}=0,2.46=9,2\left(g\right)\)
\(\Rightarrow V_{ddC_2H_5OH}=\dfrac{9,2}{0,8}=11,5\left(ml\right)\)
a) PTHH: \(Mg+2CH_3COOH\rightarrow\left(CH_3COO\right)_2Mg+H_2\uparrow\)
Ta có: \(n_{CH_3COOH}=0,2\cdot1=0,2\left(mol\right)\)
\(\Rightarrow n_{Mg}=n_{H_2}=0,1\left(mol\right)\) \(\Rightarrow\left\{{}\begin{matrix}m_{Mg}=0,1\cdot24=2,4\left(g\right)\\V_{H_2}=0,1\cdot22,4=2,24\left(l\right)\end{matrix}\right.\)
b) PTHH: \(C_2H_5OH+O_2\xrightarrow[]{men}CH_3COOH+H_2O\)
Theo PTHH: \(n_{C_2H_5OH}=n_{CH_3COOH}=0,2\left(mol\right)\)
\(\Rightarrow m_{ddC_2H_5OH}=\dfrac{0,2\cdot46}{8\%}=115\left(g\right)\) \(\Rightarrow V_{C_2H_5OH}=\dfrac{115}{0,8}=143,75\left(ml\right)\)
a, \(n_{CO_2}=\dfrac{0,56}{22,4}=0,025\left(mol\right)\)
PT: \(2CH_3COOH+Na_2CO_3\rightarrow2CH_3COONa+CO_2+H_2O\)
Theo PT: \(n_{CH_3COOH}=2n_{CO_2}=0,05\left(mol\right)\)
\(\Rightarrow C\%_{CH_3COOH}=\dfrac{0,05.60}{100}.100\%=3\%\)
b, Theo PT: \(n_{Na_2CO_3}=n_{CO_2}=0,025\left(mol\right)\Rightarrow m_{Na_2CO_3}=0,025.106=2,65\left(g\right)\)
\(n_{CH_3COONa}=2n_{CO_2}=0,05\left(mol\right)\Rightarrow m_{CH_3COONa}=0,05.82=4,1\left(g\right)\)
c, \(C_2H_5OH+O_2\underrightarrow{^{mengiam}}CH_3COOH+H_2O\)
Theo PT: \(n_{C_2H_5OH\left(LT\right)}=n_{CH_3COOH}=0,05\left(mol\right)\)
Mà: H = 80%
\(\Rightarrow n_{C_2H_5OH\left(TT\right)}=\dfrac{0,05}{80\%}=0,0625\left(mol\right)\)
\(\Rightarrow m_{C_2H_5OH\left(TT\right)}=0,0625.46=2,875\left(g\right)\)
\(\Rightarrow V_{C_2H_5OH}=\dfrac{2,875}{0,8}=3,59375\left(ml\right)\)
\(\Rightarrow V_{C_2H_5OH\left(10^o\right)}=\dfrac{3,59375}{10}.100=35,9375\left(ml\right)\)
