Tú chemistry🧑🔬🧪🧫
Region: VN
Saturday 27 June 2026 07:44:12 GMT
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𝗦𝗼𝗿𝘂❤ :
image the exothermic reaction it easily melted aluminium foil
2026-08-23 08:08:18
1
Kenyatta :
CuSo4 + NaCl2 + H20 = H2So4 +NaCl2 +Cu
2026-07-19 15:09:49
1014
dangnguyen05_12 :
CuSo4 + NaCl2 + H20 = H2So4 +NaCl2 +Cu
2026-07-26 11:28:49
59
Sipham :
NaCl giúp phá lớp oxit bảo vệ trên Al, nên Al đẩy Cu ra khỏi dung dịch CuSO₄. Phương trình phản ứng chính: 2Al+ 3CuSO4 -> Al2SO43 + 3Cu NaCl và H₂O chủ yếu tạo môi trường phản ứng, không xuất hiện trong phương trình tổng quát.
2026-08-09 05:14:52
77
малиновый чай :
CuSO4+4NaCl->Na2[CuCl4]+Na2SO4?
2026-06-28 03:28:09
309
RIP_AVOID :
can i eat or drink
2026-08-08 01:36:12
40
đang bận học hoá :
phương trình là CuSO4 tác dụng với NaCl tạo thành CuCl2 và Na2SO4
2026-06-28 06:15:41
144
Forex_Guy🦅💸🦅 :
When copper(II) sulfate (CuSO₄), sodium chloride (NaCl), and water (H₂O) are simply mixed together, no significant chemical reaction occurs.
2026-07-05 06:09:13
61
⭐️ :
CuSO4 + 2 NaCl >>>> CuCl2 + Na2SO4
2026-07-24 05:01:24
9
Manu :
Mixing hydrated copper(II) sulphate, sodium chloride, and water creates a simple physical dissolution and a reversible ligand exchange equilibrium, rather than a true net chemical change. The key components dissociate into free ions (\(Cu^{2+}\), \(SO_{4}^{2-}\), \(Na^{+}\), and \(Cl^{-}\)), which then shift color from blue to green due to the formation of chlorocuprate complex ions.Ionic DissociationHydration dissolution: Hydrated copper(II) sulphate dissolves in water to release hydrated copper ions, giving a bright blue color \([Cu(H_2O)_6]^{2+}\).Salt splitting: Sodium chloride dissolves into independent sodium (\(Na^{+}\)) and chloride (\(Cl^{-}\)) ions.No new permanent products: Because all resulting ion combinations (\(Na^{+}\), \(Cu^{2+}\), \(SO_{4}^{2-}\), \(Cl^{-}\)) remain soluble in water, no precipitate or permanent new compound forms in a net sense.Equilibrium and Color ShiftLigand replacement: High concentrations of chloride ions crowd around the copper ion, replacing some water molecules (ligands) attached to the copper.Subtractive color mixing: This swap creates a mix of blue hexaaquacopper(II) ions and yellowish-green tetrachlorocuprate(II) ions (\([CuCl_4]^{2-}\)), making the solution look green The mixture corrodes aluminum foil through an accelerated redox (reduction-oxidation) reaction, where aluminum metal is rapidly oxidized by copper(II) ions, a process heavily catalyzed by chloride ions.1. Breaking the Oxide LayerThe barrier: Aluminum normally resists corrosion because it features a tough, invisible aluminum oxide (\(Al_{2}O_{3}\)) protective layer.Chloride penetration: The chloride ions (\(Cl^{-}\)) from the dissolved sodium chloride are uniquely small and highly charged, allowing them to penetrate and disrupt this oxide layer.Exposing raw metal: This penetration exposes the highly reactive, raw aluminum metal directly to the water and copper ions.2. The Redox ReactionElectron transfer: Aluminum is a more reactive metal than copper, meaning it loses electrons much more easily.Aluminum oxidation: The raw aluminum (\(Al\)) gives up electrons and dissolves into the solution as aluminum ions (\(Al^{3+}\)).Copper reduction: The copper(II) i
2026-07-27 14:13:36
10
toluene :
cucl2 cộng al ra cu cộng alcl3
2026-06-27 08:10:22
45
daaniell0205 :
try without Al 😁😂😂
2026-06-29 06:14:20
6
hề hề hế hê hê🐧 :
m có thể thay mấy cái có thể gọi tắt lại dc ko vd: NaCl=muối
2026-07-01 09:18:02
5
Belle 🎀 Ann 🇬🇭 :
arts students please it's not magic wai😁
2026-07-21 00:08:59
9
Nagi :
Ngon v sop, ăn dc k ạ
2026-06-27 09:26:23
7
Charles hunk :
I think the logic behind is that the addition of H2O to the mixture is to form an electrochemical cell where Al becomes an electrode and it dissolve s to form ions and loses electrons while copper metal is formed
2026-07-15 19:27:02
9
Mint Majonoside :
Al p/u với CuSO4 tạo ra Cu => Pin điện hoá Al/Cu => tăng tốc độ ăn mòn Al => Al p/u H20 tạo H2 sinh nhiệt mạnh làm cháy màng Al.
2026-07-18 08:11:57
1
топельцин :
не делайте так,это очень вредно
2026-06-30 12:17:00
5
KINGSLEY⌛ :
CuS04 + NaCl + H2O + Aluminum foil 2Al + 3CuSO4 __ Al2(SO4)3 + 3Cu Displacement reaction+ corrosion in the presence of oxygen.
2026-07-25 13:24:43
5
Steger Daniel :
Al is way above copper in the redox Hierarchie. CuSO4 -AlSO4
2026-06-29 09:26:42
15
béo thì đổi tên :
tui tưởng NaCl td v H2O tạo ra NaOH +NaClO+H2O v lại 1 phần khí h2 thoát ra xong cái CuSO4 td v NaOh tạo ra Cu(OH)2 cộng v lại Na2SO4 còn cái làm lủng đc cái đó chắc tại NaClO có tính tẩy=))
2026-08-23 14:08:19
2
GA :
đi làm liền,nhà hay hay có đủ
2026-08-23 21:07:39
2
quaithai12caidai :
cuso4 + nacl+ h2o=cclso4
2026-08-19 16:55:48
1
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