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a) n glucozo = 54/180 = 0,3(mol)
n glucozo pư = 0,3.80% = 0,24(mol)
$C_6H_{12}O_6 \xrightarrow{t^o} 2CO_2 +2 C_2H_5OH$
n C2H5OH = 2n glucozo = 0,48(mol)
m C2H5OH = 0,48.46 = 22,08(gam)
b)
$C_2H_5OH + O_2 \xrightarrow{men\ giấm} CH_3COOH + H_2O$
n CH3COOH = n C2H5OH = 0,48(mol)
C% CH3COOH = 0,48.60/500 .100% = 5,76%
V C 2 H 5 OH = 50.4/100 = 2l
→ m C 2 H 5 OH = 2.1000.0,8 = 1600g
Phương trình hóa học :
C 2 H 5 OH + O 2 → CH 3 COOH + H 2 O
46 gam 60 gam
1600 gam x
x = 1600x60/46
Vì hiệu suất đạt 80% → m CH 3 COOH = 1600.60.80/(46.100) = 1669,6g
→ m giấm = 1669,6/5 x 100 = 33392 (gam) = 33,392 kg
\(C_2H_5OH+O_2\rightarrow\left(men.giấm\right)CH_3COOH+H_2O\\ V_{C_2H_5OH}=25.4\%=1\left(l\right)=1000\left(ml\right)\\ m_{C_2H_5OH}=1000.0,8=800\left(g\right)\\ m_{CH_3COOH\left(LT\right)}=\dfrac{800.60}{46}=\dfrac{48000}{46}\left(g\right)\\ m_{CH_3COOH\left(TT\right)}=\dfrac{48000}{46}:92\%=1134,2155\left(gam\right)\\ m_{ddCH_3COOH}=1135,2155:5\%=22684,31\left(g\right)\)
a. \(m_{C_2H_5OH}=\dfrac{10.0,8.8}{100}=0,64\left(kg\right)\)
\(n_{C_2H_5OH}=\dfrac{0,64}{46}=\dfrac{8}{575}\left(k-mol\right)\)
\(C_2H_5OH+O_2\rightarrow\left(t^o,men.giấm\right)CH_3COOH+H_2O\)
\(\dfrac{8}{575}\) \(\dfrac{8}{575}\) ( k-mol )
\(m_{CH_3COOH}=\dfrac{8}{575}.60.92\%=0,768\left(kg\right)=768\left(g\right)\)
b.\(m_{dd_{CH_3COOH}}=\dfrac{768.100}{4}=19200\left(g\right)\)
a, \(V_{C_2H_5OH}=\dfrac{10.9}{100}=0,9\left(l\right)=900\left(ml\right)\)
\(\Rightarrow m_{C_2H_5OH}=900.0,8=720\left(g\right)\Rightarrow n_{C_2H_5OH}=\dfrac{720}{46}=\dfrac{360}{23}\left(mol\right)\)
PT: \(C_2H_5OH+O_2\underrightarrow{^{mengiam}}CH_3COOH+H_2O\)
Theo PT: \(n_{CH_3COOH\left(LT\right)}=n_{C_2H_5OH}=\dfrac{360}{23}\left(mol\right)\)
Mà: H = 92%
\(\Rightarrow n_{CH_3COOH\left(TT\right)}=\dfrac{360}{23}.92\%=14,4\left(mol\right)\)
\(\Rightarrow m_{CH_3COOH}=14,4.60=864\left(g\right)\)
b, \(m_{ddgiam}=\dfrac{864}{5\%}=17280\left(l\right)\)
\(a,n_{C_6H_{12}O_6}=\dfrac{450}{180}=2,5\left(mol\right)\)
PTHH: C6H12O6 --men rượu--> 2C2H5OH + 2CO2
2,5-------------------------->5
C2H5OH + O2 --men giấm--> CH3COOH + H2O
5------------------------------------>5
\(b,m_{C_2H_5OH}=5.46=230\left(g\right)\)
\(c,m_{CH_3COOH}=5.80\%.60=240\left(g\right)\)
a)\(n_{C_6H_{12}O_6}=\dfrac{450}{180}=2,5mol\)
\(C_6H_{12}O_6\underrightarrow{menrượu}2C_2H_5OH+2CO_2\)
2,5 5
b)\(m_{C_2H_5OH}=5\cdot46=230g\)
c)\(C_2H_5OH+O_2\underrightarrow{mengiấm}CH_3COOH+H_2O\)
5 5
Thực tế: \(n_{CH_3COOH}=5\cdot80\%=4mol\)
\(m_{CH_3COOH}=4\cdot60=240g\)
\(n_{C_6H_{12}O_6}=\dfrac{45}{180}=0,25mol\)
\(C_6H_{12}O_6\underrightarrow{lênmen}2C_2H_5OH+2CO_2\)
0,25 0,5 0,5
\(C_2H_5OH+O_2\underrightarrow{mengiấm}CH_3COOH+H_2O\)
0,5 0,5
\(C_{M_{CH_3COOH}}=\dfrac{0,5}{1}=0,5M\)
\(n_{C_6H_{12}O_6}=\dfrac{45}{180}=0,25\left(mol\right)\)
PTHH:
C6H12O6 --men rượu--> 2CO2 + 2C2H5OH
0,25-------------------------------------->0,5
C2H5OH + O2 --men giấm--> CH3COOH + H2O
0,5------------------------------------->0,5
\(\rightarrow C_{M\left(CH_3COOH\right)}=\dfrac{0,5}{1}=0,5M\)