Answer to Question #286485 in Chemistry for khryst

Question

determine how many electron/s are lost or gained in the half-reaction.

1.     Al → Al³⁺

a. 2

b.     3

c.      4

d.     6

 

2.     O^2– → O₂

a.      2

b.     3

c.      4

d.     6

3.   SO₃^2– → SO₄^2–  

a.      2

b.     3

c.      4

d.     6

 

4.     PbO₂ → Pb²⁺

a.      2

b.     3

c.      4

d.     6

Answer 1

1. b.3
2. c.4
3. a.2
4. a.2