- Mau thCf cho kettua keo trSng, sau d6 bi tan dan den het Ik Al2(S04)3: Al2(S04)3 + 6 N a O H > 2 A l ( O H ) 3 i + 3Na2S
F: CH3CHO G: CH3COOH H: C4H4 I: C4H10 K: C4IỊ Cac phan ufng xay ra:
Cac phan ufng xay ra:
CeHiaOe ^ A: C6H12O6 ' > 2C2H5OH + 2C02t A ^ B: C2H5OH " 2 S 0 4 d a . n d a c ^ ^ Q
170°C
B -> C: C2H4 + HCl > C2H5CI
C-> A: C2H5CI + NaOH — > C2H5OH + NaCl
B ^ D: C2H4 + H2 ^° > C2Hct
D -> C: C2H6 + CI2 ^ " h sang khuech tan ^ C2H5CI + HCl
D ^ E: C2H6 ~ — > C2H2t + 2 H 2 t -"2 E ^ F: C2H2 + H2O — > CH3CHO 8 0 ° C F ^ G: 2CH3CHO + O2 ^—^ ^2 ^ 2CH3COOH F -> A: CH3CHO + H2 — > CH3CH2OH A + G > CH3COOC2H5
C2H5OH + CH3COOH . " ^ ^ " ^ ^ ^ ' - ^ ^ V CH3COOC2H5 + H2O t t B -> E: C2H4 > C2H2t + H 2 t -^2 E -> H : 2C2H2 N H. C l , C u C l ^ ^ ^ ^ ^ (CH2=CH-C^CH) t H -> I : C4H4 + 3H2 —> C4H10 I -> K: C4H10 > C4H6 (CH2 = CH-CH=CH2) + 2H2T K -> [-CH2- C H = C H-CH2-] nCH2 - CH-CH=CH2 > ( - C H 2- C H = C H- C H 2 - ) „ Cdu IIỊ
• K h i nhiet phan MgCOs, ta c6 phan ufng:
MgC03 > MgO + COat (1) K h i B la CO2, chat rSn A la MgO va c6 the MgCOg con dif.
• Hap thu k h i B bang dung dich NaOH ta dagc dung djch C, dung dich C VLfa tac dung diJcfc vdi dung dich BaCl2, vCfa tac dung difOc
v6i dung dich K O H -> trong dung dich. C co 2 muoi (NaHC03 va Na2C03) va H2Ọ
CO2 + 2 N a O H > NaaCOa + H2O CO2 + NaOH > NaHC03
NaaCOs + BaCl2 > BaC03l + 2NaCl
2NaHC03 + 2 K 0 H > K2CO3 + NaaCOg + 2H2O
, • K h i hoa tan chat ran A bang dung dich HCl dii ta thu diigc k h i B
va dung dich D gomCMgClg, HCl dir va H2O).
^ j i , Phan Lifng:
MgO + 2HC1 > MgCh + H2O
MgC03 + 2HC1 > MgCh + COat + H2O
Co can dung dich E ta dugc MgCh khan, k h i dien phan MgCl2 thu di/gc M g va CI2.
MgCl2 dien phan nong chay ^ ^ ^ j ^ ^
Cdu IV.
a ) T r o n g cac dung dich t r e n chi c6 dung dich Cu(N03)2 c6 m a u xaiij| n e n t a n l i a n b i e t di/oc Cu(N03)2.