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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)
\(n_{CO_2}=\dfrac{5,6}{22,4}=0,25\left(mol\right)\)
PTHH: C6H12O6 --men rượu--> 2C2H5OH + 2CO2
0,125<---------------------0,25<-------0,25
=> \(m_{C_2H_5OH}=0,25.46=11,5\left(g\right)\)
b) \(m_{C_6H_{12}O_6\left(pư\right)}=0,125.180=22,5\left(g\right)\)
=> \(m_{C_6H_{12}O_6\left(tt\right)}=\dfrac{22,5.100}{80}=28,125\left(g\right)\)
c) \(V_{C_2H_5OH}=\dfrac{11,5}{0,8}=14,375\left(ml\right)\)
=> \(V_{rượu}=\dfrac{14,375.100}{25}=57,5\left(ml\right)\)
nCaCO3 =nCO2=55,2/100=0,552 mol
C6H12O6 =>2C2H5OH + 2CO2
0,276 mol<= 0,552 mol
=>nC6H12O6 thực tế=0,276/92%=0,3 mol
=>mGlucozơ=0,3.180=54g
Cũng đề trên câu d/cho toàn bộ ru7o75u thu dc tr6n t/d với 300ml dd CH3COOH 2M(xúc tác thích hợp)thu dc 33 g este.Tìm hiệu suất phản ứng este hoá
a)n glucozo = 90/180 = 0,5(kmol)
n glucozo pư = 0,5.70% = 0,35(kmol)
$C_6H_{12}O_6 \xrightarrow{t^o,xt} 2CO_2 + 2C_2H_5OH$
n C2H5OH = 2n glucozo = 0,35.2 = 0,7(kmol)
m C2H5OH = 0,7.46 = 32,2(kg)
b)$(C_6H_{10}O_5)_n + nH_2O \xrightarrow{t^o,xt}nC_6H_{12}O_6$
$C_6H_{12}O_6 \xrightarrow{t^o,xt} 2CO_2 + 2C_2H_5OH$
n tinh bột = 2/162n = 1/81n(kmol)
n glucozo = 80% . n . 1/81n = 4/405(kmol)
n C2H5OH = 80% . 2. 4/405 = 32/2025(kmol)
m C2H5OH = 46.32/2025 = 0,73(kg)
\(n_{C_6H_{12}O_6}=\dfrac{90}{180}=0.5\left(kmol\right)\)
\(n_{C_6H_{12}O_6\left(pư\right)}=0.5\cdot0.7=0.35\left(kmol\right)\)
\(C_6H_{12}O_6\underrightarrow{^{\text{men rượu}}}2C_2H_5OH+2CO_2\)
\(0.35........................0.7\)
\(m_{C_2H_5OH}=0.7\cdot46=32.2\left(kg\right)\)
\(b.\)
\(C_{12}H_{22}O_{11}\underrightarrow{^{t^0,xt}}C_6H_{12}O_6+C_6H_{12}O_6\)
\(C_6H_{12}O_6\underrightarrow{^{\text{men rượu}}}2C_2H_5OH+2CO_2\)
\(n_{C_2H_5OH}=\dfrac{12\cdot n_{C_{12}H_{22}O_{11}}}{2}\cdot80\%=\dfrac{12\cdot\dfrac{1}{171}}{2}\cdot80\%=\dfrac{8}{285}\left(kmol\right)\)
\(m_{C_2H_5OH}=\dfrac{8}{285}\cdot46=1.29\left(kg\right)\)
n glucozo = 360/180 = 2(mol)
n glucozo phản ứng = 2.80% = 1,6(mol)
$C_6H_{12}O_6 \xrightarrow{t^o,xt} 2CO_2 + 2C_2H_5OH$
$CO_2 + Ca(OH)_2 \to CaCO_3 + H_2O$
Theo PTHH :
n CaCO3 = n CO2 = 2n glucozo pư = 1,6.2 = 3,2(mol)
m CaCO3 = m = 3,2.100 = 320(gam)
Ta có: \(n_{C_6H_{12}O_6}=\dfrac{360}{180}=2\left(mol\right)\)
PT: \(C_6H_{12}O_6\xrightarrow[t^o]{menruou}2C_2H_5OH+CO_2\)
______2_______________________4 (mol)
Vì: H% = 80% ⇒ nCO2 (thực tế) = 4.80% = 3,2 (mol)
\(CO_2+Ca\left(OH\right)_2\rightarrow CaCO_{3\downarrow}+H_2O\)
3,2_________________3,2 (mol)
⇒ mCaCO3 = 3,2.100 = 320 (g)
Bạn tham khảo nhé!
\(m_{rượu} = 10.1000.0,8 = 8000(gam)\\ n_{rượu} = \dfrac{8000}{46} = \dfrac{4000}{23}(mol)\\ C_2H_5OH + O_2 \xrightarrow{t^o} CH_3COOH + H_2O\\ n_{CH_3COOH} = n_{C_2H_5OH} =\dfrac{4000}{23}.80\% = \dfrac{3200}{23}(mol)\\ C_{M_{CH_3COOH}} = \dfrac{\dfrac{3200}{23}}{10} =13,91M \)
\(n_{C_6H_{12}O_6}=\dfrac{1,8}{180}=0,01\left(mol\right)\)
PTHH: C6H12O6 --men rượu--> 2CO2 + 2C2H5OH
0,01---------------------->0,02----->0,02
=> \(\left\{{}\begin{matrix}V_{CO_2}=0,02.2.80\%.22,4=0,3584\left(l\right)\\m_{C_2H_5OH}=0,02.46.80\%=0,736\left(g\right)\end{matrix}\right.\)