Question

CaO -Ca which is oxidation and reduction

Answer 1

what u mean ?

Answer 2

How to determine if each of the following changes is an oxidation, reduction or neither.
a) SO32- = So42-
b) CaO = Ca
C) Cr)42- = Cr2O72-
d) 2I- = I2

Answer 3

a) gain and (O).....So3-->So4 it is oxidation
b) loss of (O) ......it is reduction
C) it is not clear ...
D) loss of electrons...... 2I- ----> I2 it is oxidation by lossing electrons

Answer 4

State the charges on each ion in each of the following compounds
a) K2O
b) CaO
c) Fe2O3
d) Cu(NO3)2
e) Al(OH)3
f) Fe2(SO4)3