6.) 2 H2O(1) + Al(s) + MnO4 (aq) → Al(OH)4 -(aq) + MnO2(s) 7.) Mg (s) + 2 HC1 (g) →MgCl2 (s) + H2 (g) 8.) Cl2 (g) + 2 NaBr (s) → 2 NaCl (s) + Br2 (g)

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Chapter1: Chemical Foundations
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I just need help with questions 4-8! Thank you

Date:
DIOCK:
What was oxidized?
(lost electrons)
Reaction – Make sure to identify all the oxidation
What was reduced?
Show that the
numbers.
(gained electrons)
number of electrons
balance out
4 x +3 = +12
6 x -2 = -12
+3 -2
4 Fe goes from 0 to +3
60 goes from 0 to -2
EX: 4 Fe + 302 → 2FE203
1.) Pa+10 Cl2→4 PCI5
2.) Cu + 4HNO3 (aq) → Cu(NO3 )2 + 2NO2 + 2H2O
|3.) 2H2 (g) + О2 (g) — 2H20 (g)
|4.) 2РЬS(s) + 302 (g) — 2РЬ0(s) + 2SO2 (g)
5.) Cd(s) + NiO2(s) + 2 H2O(1)→ Cd(OH)2(s) + Ni(OH)2(s)
6.) 2 H2O(1) + Al(s) + MnO4 -(aq) → Al(OH)4 (aq) + MnO2(s)
7.) Mg (s) + 2 HC1 (g) →MgCl2 (s) + H2 (g)
8.) Cl2 (g) + 2 NaBr (s) → 2 NaCl (s) + Br2 (g)
Transcribed Image Text:Date: DIOCK: What was oxidized? (lost electrons) Reaction – Make sure to identify all the oxidation What was reduced? Show that the numbers. (gained electrons) number of electrons balance out 4 x +3 = +12 6 x -2 = -12 +3 -2 4 Fe goes from 0 to +3 60 goes from 0 to -2 EX: 4 Fe + 302 → 2FE203 1.) Pa+10 Cl2→4 PCI5 2.) Cu + 4HNO3 (aq) → Cu(NO3 )2 + 2NO2 + 2H2O |3.) 2H2 (g) + О2 (g) — 2H20 (g) |4.) 2РЬS(s) + 302 (g) — 2РЬ0(s) + 2SO2 (g) 5.) Cd(s) + NiO2(s) + 2 H2O(1)→ Cd(OH)2(s) + Ni(OH)2(s) 6.) 2 H2O(1) + Al(s) + MnO4 -(aq) → Al(OH)4 (aq) + MnO2(s) 7.) Mg (s) + 2 HC1 (g) →MgCl2 (s) + H2 (g) 8.) Cl2 (g) + 2 NaBr (s) → 2 NaCl (s) + Br2 (g)
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