n H2 =0,3 mol

n NaOH =0,2 mol

=>n OH= n H+ =0,2 mol

=>n CH3COOH=0,2 mol

=>m CH3COOH=0,2.60=12g

->n C2H5OH=0,1 mol

=>m C2H5OH=4,6g

=>mC2H5OH=\(\dfrac{4,6}{4,6+12}100=27,71\%\)

=>maxit=72,29%

b)

CH3COOH+C2H5OH->CH3COOC2H5+H2O

                           0,1-------------0,1

=>H=82%

=>m CH3COOC2H5=0,082.88=7,216g

\(n_{NaOH}=0,4.0,5=0,2\left(mol\right)\)

PT: \(CH_3COOH+NaOH\rightarrow CH_3COONa+H_2O\)

Theo PT: \(n_{CH_3COOH}=n_{NaOH}=0,2\left(mol\right)\)

\(\Rightarrow\left\{{}\begin{matrix}\%m_{CH_3COOH}=\dfrac{0,2.60}{15,2}.100\%\approx78,95\%\\\%m_{C_2H_5OH}\approx21,05\%\end{matrix}\right.\)

a) Gọi số mol CH₃COOH, C₂H₅OH là a, b (mol)

=> 60a + 46b = 25,8 (1)

\(n_{H_2}=\dfrac{5,6}{22,4}=0,25\left(mol\right)\)

PTHH: 2Na + 2CH₃COOH --> 2CH₃COONa + H₂

                               a------------------------->0,5a

           2Na + 2C₂H₅OH --> 2C₂H₅ONa + H₂

                           b--------------------->0,5b

=> 0,5a + 0,5b = 0,25 (2)

(1)(2) => a = 0,2 (mol); b = 0,3 (mol)

=> \(\left\{{}\begin{matrix}\%m_{CH_3COOH}=\dfrac{0,2.60}{25,8}.100\%=46,51\%\\\%m_{C_2H_5OH}=\dfrac{0,3.46}{25,8}.100\%=53,49\%\end{matrix}\right.\)

b) 

\(n_{CH_3COOC_2H_5}=\dfrac{13,2}{88}=0,15\left(mol\right)\)

PTHH: CH₃COOH + C₂H₅OH --H₂SO_4(đ),t^o--> CH₃COOC₂H₅ + H₂O

Xét tỉ lệ: \(\dfrac{0,2}{1}< \dfrac{0,3}{1}\) => Hiệu suất tính theo CH₃COOH

PTHH: CH₃COOH + C₂H₅OH --H₂SO_4(đ),t^o--> CH₃COOC₂H₅ + H₂O

                   0,15<---------------------------------0,15

=> \(H=\dfrac{0,15}{0,2}.100\%=75\%\)

\(n_{CH_3COOH}=0,2\cdot0,1=0,02mol\)

a)\(2CH_3COOH+Mg\rightarrow\left(CH_3COO\right)_2Mg+H_2\)

    0,02                    0,01        0,01                   0,01

b)\(V_{H_2}=0,01\cdot22,4=0,224l=224ml\)

\(m_{Mg}=0,01\cdot24=0,24g\)

c)\(CH_3COOH+C_2H_5OH\xrightarrow[xtH_2SO_4đ]{t^o}CH_3COOC_2H_5+H_2O\)

   0,02             \(\dfrac{1,15}{46}=0,025\)               0,02

   \(m_{etylaxetat}=0,02\cdot88=1,76g\)

   \(H=80\%\Rightarrow m_{CH_3COOC_2H_5}=1,76\cdot80\%=1,408g\)

$CH_3COOH + KOH \to CH_3COOK + H_2O$
n CH3COOH  = n KOH = 50.11,2%/56 = 0,1(mol)

=> n C2H5OH = (15,2 - 0,1.60)/46 = 0,2(mol)

\(CH_3COOH + C_2H_5OH \buildrel{{H_2SO_4,t^o}}\over\rightleftharpoons CH_3COOC_2H_5 + H_2O\)

Ta thấy : 

n CH3COOH = 0,1 < n C2H5OH = 0,2 nên hiệu suất tính theo số mol CH3COOH

n CH3COOC2H5 = n CH3COOH pư = 0,1.60% = 0,06 (mol)

=> m este = 0,06.88 = 5,28 (gam)

1/ a. C2H5OH + Na --> C2H5ONa + 1/2H2

b. CH3COOH + C2H5OH <-H2SO4đ,to-> CH3COOC2H5 + H2O

C2H4 + H2O -H2SO4-> C2H5OH

d. CH4 + Cl2 -as-> CH3Cl + HCl

1/ +PTHH:

a/ C2H5OH + Na => C2H5ONa + 1/2 H2

b/ CH3COOH + C2H5OH => (t^o,H2SO4đ) CH3COOC2H5 + H2O

c/ C2H4 + H2O => (H2SO4đ,140^oC) C2H5OH

d/ CH4 + Cl2 => (askt) CH3Cl + HCl

2/ +PTHH:

2CH3COOH + CaCO3 => (CH3COO)2Ca + CO2 + H2O

nCO2 = V/22.4 = 2.24/22.4 = 0.1 (mol)

Suy ra: nCH3COOH = 0.2 (mol)

===> mCH3COOH = n.M = 0.2 x 60 = 12 (g) > 10 (g): xem lại đề

a, Gọi \(\left\{{}\begin{matrix}n_{C_2H_5OH}=a\left(mol\right)\\n_{CH_3COOH}=b\left(mol\right)\end{matrix}\right.\)

\(n_{H_2}=\dfrac{11,2}{22,4}=0,5\left(mol\right)\)

PTHH: 

2C₂H₅OH + 2Na ---> 2C₂H₅ONa + H₂

a---------------------------------------->0,5a

2CH₃COOH + 2Na ---> 2CH₃COONa + H₂

b------------------------------------------------>0,5b

=> hệ pt \(\left\{{}\begin{matrix}46a+60b=48,8\\0,5a+0,5b=0,5\end{matrix}\right.\Leftrightarrow\left\{{}\begin{matrix}a=0,8\left(mol\right)\\b=0,2\left(mol\right)\end{matrix}\right.\)

\(\Rightarrow\left\{{}\begin{matrix}m_{C_2H_5OH}=0,8.46=36,8\left(g\right)\\m_{CH_3COOH}=0,2.60=12\left(g\right)\end{matrix}\right.\\ \Rightarrow\left\{{}\begin{matrix}\%m_{C_2H_5OH}=\dfrac{36,8}{48,8}.100\%=75,41\%\\\%m_{CH_3COOH}=100\%-75,41\%=24,59\%\end{matrix}\right.\)

b, PTHH:

\(C_2H_5OH+CH_3COOH\xrightarrow[t^o]{H_2SO_4đặc}CH_3COOC_2H_5+H_2O\)

LTL: 0,8 > 0,2 => Rượu dư

\(n_{CH_3COOC_2H_5\left(tt\right)}=0,2.85\%=0,17\left(mol\right)\\ m_{este}=0,17.88=14,96\left(g\right)\)

a.Gọi \(\left\{{}\begin{matrix}n_{C_2H_5OH}=x\\n_{CH_3COOH}=y\end{matrix}\right.\)

\(n_{H_2}=\dfrac{11,2}{22,4}=0,5mol\)

\(2C_2H_5OH+2Na\rightarrow2C_2H_5ONa+H_2\)

             x                                          1/2 x         ( mol )

\(2CH_3COOH+Na\rightarrow2CH_3COONa+H_2\)

        y                                                      1/2 y       ( mol )

Ta có:

\(\left\{{}\begin{matrix}46x+60y=48,8\\\dfrac{1}{2}x+\dfrac{1}{2}y=0,5\end{matrix}\right.\) \(\Leftrightarrow\left\{{}\begin{matrix}x=0,8\\y=0,2\end{matrix}\right.\)

\(\rightarrow m_{C_2H_5OH}=0,8.46=36,8g\)

\(\rightarrow\left\{{}\begin{matrix}\%m_{C_2H_5OH}=\dfrac{36,8}{48,8}.100=75,4\%\\\%m_{CH_3COOH}=100\%-75,4\%=24,6\%\end{matrix}\right.\)

b.\(C_2H_5OH+CH_3COOH\rightarrow\left(H_2SO_4\left(đ\right),t^o\right)CH_3COOC_2H_5+H_2O\)

        0,8     <          0,2                                                                       ( mol )

                               0,2                                             0,2                    ( mol )

\(m_{CH_3COOC_2H_5}=0,2.88.85\%=14,96g\)