REDOX

Question 1

What is the definition of an Oxidation Number?

Answer 1

The charge that would exist on an individual atom if the bonding were completely ionic

Question 2

How do you determine which element has the positive Oxidation value?

Answer 2

the more electronegative species will have the negative value

electronegativity increases across a period and decreases down a group

O is further to the right than C in the periodic table so it has the negative value

Question 3

How do you determine the value of an element’s oxidation state?

Answer 3

from its position in the periodic table and/or
the other element(s) present in the formula

Question 4

Definition of Oxidising Agent?

Answer 4

An oxidising agent is a substance that oxidises another atom or ion by causing it to lose electrons

Question 5

Definition of Reducing Agent?

Answer 5

A reducing agent is a substance that reduces another atom or ion by causing it to gain electrons

Question 6

What does Reduction do to the Oxidation number

Answer 6

When a substance is reduced the Oxidation number decreases

Question 7

Reactivity Series of Metals

Answer 7

K, Na, Ca, Mg, Al, Zn, Fe, Pb, Cu, Ag, Au, Pt

Question 8

The role of the Oxidising Species?

Answer 8

To accept electrons from another species

Question 9

Which Oxygen Compounds do not have an Oxidation number of -2?

Answer 9

-1