In the reaction Mg(s) plus 2H2O(I) and 61664 Mg(OH)2(s) plus H2(g) what is the oxidation state of each H in H2(g)?

Answer 1

Simply remember OIL RIG. Oxidation Is Loss (of electron) and Reduction Is Gain (of electron). In the case of MnO4-(aq) + 8H+(aq) + 5e- --> Mn2+(aq) + 4H2O(l) H is the oxidizing agent, because it causes Mn to be oxidized to Mn2+.

Answer 2

The oxidation state of magnesium in magnesium hydroxide is +2 no matter what reaction you are looking at.

Answer 3

The Chlorine. Which is being reduced ( accepting electrons )

Answer 4

0

This is the answer on Apex, +2 is wrong