Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
\(V_{C_2H_5OH}=\dfrac{1.1000.40}{100}=400\left(ml\right)\\ \rightarrow m_{C_2H_5OH\left(TT\right)}=400.0,8=320\left(g\right)\\ \rightarrow m_{C_2H_5OH\left(LT\right)}=\dfrac{320.100}{80}=400\left(g\right)\\ \rightarrow n_{C_2H_5OH\left(LT\right)}=\dfrac{400}{23}\left(mol\right)\)
PTHH: \(C_6H_{12}O_6\underrightarrow{\text{men rượu}}2C_2H_5OH+2CO_2\uparrow\)
\(\dfrac{200}{23}\)<-----------------\(\dfrac{400}{23}\)
\(\rightarrow m_{C_6H_{12}O_6}=\dfrac{200}{23}.180=\dfrac{36000}{23}\left(g\right)\)
a, \(n_{C_2H_4}=\dfrac{3,36}{22,4}=0,15\left(mol\right)\)
PT: \(C_2H_4+H_2O\underrightarrow{^{t^o,xt}}C_2H_5OH\)
Theo PT: \(n_{C_2H_5OH\left(LT\right)}=n_{C_2H_4}=0,15\left(mol\right)\)
Mà: H = 80%
\(\Rightarrow n_{C_2H_5OH\left(TT\right)}=0,15.80\%=0,12\left(mol\right)\)
\(\Rightarrow m_{C_2H_5OH\left(TT\right)}=0,12.46=5,52\left(g\right)\)
b, \(V_{C_2H_5OH}=\dfrac{5,52}{0,8}=6,9\left(ml\right)\)
\(a,C_2H_5OH+O_2\left(men.giấm\right)\rightarrow CH_3COOH+H_2O\\ V_{C_2H_5OH\left(ng.chất\right)}=\dfrac{2,875}{10}=0,2875\left(l\right)=287,5\left(ml\right)\\ m_{C_2H_5OH}=287,5.0,8=230\left(g\right)\\ n_{C_2H_5OH}=\dfrac{230}{46}=5\left(mol\right)\\ n_{CH_3COOH\left(LT\right)}=n_{C_2H_5OH}=5\left(mol\right)\\ n_{CH_3COOH\left(TT\right)}=5.80\%=4\left(mol\right)\\ m_{CH_3COOH\left(TT\right)}=4.60=240\left(g\right)\\ b,m_{dd.giấm}=\dfrac{240.100}{5}=4800\left(gam\right)\)
a.\(V_{C_2H_5OH}=\dfrac{10.8}{100}=0,8ml\)
\(m_{C_2H_5OH}=0,8.0,8=1,6g\)
\(n_{C_2H_5OH}=\dfrac{1,6}{46}=0,034mol\)
\(C_2H_5OH+O_2\rightarrow\left(men.giấm\right)CH_3COOH+H_2O\)
0,034 0,034 ( mol )
\(m_{CH_3COOH}=0,034.60.80\%=1,632g\)
b.\(m_{dd_{CH_3COOH}}=\dfrac{1,632}{5\%}=32,64g\)
a,\(n_{H_2SO_4}=0,2.3=0,6\left(mol\right);n_{BaCl_2}=0,35.2=0,7\left(mol\right)\)
PTHH: H2SO4 + BaCl2 → BaSO4 ↓ + 2HCl
Mol: 0,6 0,6 0,6 0,12
Ta có: \(\dfrac{0,6}{1}< \dfrac{0,7}{1}\)⇒ H2SO4 hết, BaCl2 dư
\(m_{BaSO_4}=0,6.233=139,8\left(g\right)\)
b,Vdd sau pứ = 0,2+0,35 = 0,55 (l)
\(C_{M_{HCl}}=\dfrac{0,6}{0,55}=\dfrac{12}{11}M\)
\(C_{M_{BaCl_2dư}}=\dfrac{0,7-0,6}{0,55}=\dfrac{2}{11}M\)
c,\(m_{H_2SO_4\left(lt\right)}=0,6.98=58,8\left(g\right)\Rightarrow m_{H_2SO_4\left(pứ\right)}=\dfrac{58,8}{75\%}=78,4\left(g\right)\)
\(n_{H_2SO_4}=\dfrac{78,4}{98}=0,8\left(mol\right)\)
PTHH: 3FeS2 + 6H2O + 11O2 → Fe3O4 + 6H2SO4
Mol: 0,4 0,8
\(m_{FeS_2\left(lt\right)}=0,8.120=96\left(g\right)\)
\(m_{C_6H_{12}O_6}=\dfrac{10.1000.\left(100-10\right)}{100}=9000\left(g\right)\\ \rightarrow n_{C_6H_{12}O_6}=\dfrac{9000}{180}=50\left(mol\right)\)
PTHH: \(C_6H_{12}O_6\underrightarrow{\text{men rượu}}2C_2H_5OH+2CO_2\uparrow\)
50--------------------->100
\(\rightarrow m_{C_2H_5OH}=\dfrac{50.46.\left(100-5\right)}{100}=2185\left(g\right)\\ \rightarrow V_{C_2H_5OH}=\dfrac{2185}{0,8}=2731,25\left(ml\right)\\ \rightarrow V_{ddC_2H_5OH}=\dfrac{2731,25.100}{46}=5937,5\left(ml\right)\)
Độ rượu=V(rượu nguyên chất)*100/V(dd rượu)
---> V(rượu nguyên chất)=460ml
--->m(rượu nguyên chất)=V*d=460*0.8=368g
---->n(rượu nguyên chất=8 mol
C6H12O6---->2C2H5OH + 2CO2
Mol: 4 m(glucozo) thực tế=180*4*100/80=900g
=>D