Match the following related items.
1. gain of electrons reduction 2. low e0 oxidation 3. loss of electrons anions 4. high e0 negative ions 5. negative ions weak oxidizer 6. positive ions cations 7. migrate to cathode strong oxidizer 8. migrate to anode positive ions

1. gain of electrons: reduction

2.low : weak oxidiser

3. loss of electrons:  oxidation

4. high : strong oxidiser

5. negative ions: anions

6. positive ions: cations

7. migrate to cathode : positive ions

8. migrate to anode : negative ions

Explanation: Reduction is the process in which electrons are gained and thus there is decrease in the oxidation number.

Oxidation is the process in which electrons are lost and thus there is an increase in the oxidation number.

Elements with high reduction electrode potentials can easily accept electrons and thus themselves get reduced and thus act as good oxidizing agents.

Elements with low reduction electrode potentials can easily lose electrons and thus themselves get oxidized and thus act as good reducing agents.

The anions bearing negative charge are called as anions and the ions bearing positive charge are called as cations. is action and is an anion.

In electrolytic cell, Cathode is a negatively charged electrode and thus attracts cations bearing positive charge and anode is a positively charged electrode and thus attracts anions bearing negative charge.

a. the law of proportion states the combination of 2 atoms in a specific ratio to produce multiple compounds such as the given statement of question ‘1st compound contains 88.8 % cu ’ indicates 88.8 g of cu is present along with 11.2 g oxygen in 100 g of compound whereas the statement ‘2st compound contains 79.9 % cu ’ indicates 79.9 g of cu is present along with 20.1 g oxygen in 100 g of compound

1st compound contains 88.8 g cu

for cu

m = 63 g /mol

atomic % = 88.8 /63 = 1.42

for o

m = 16 g /mol

atomic % = 11.2 /16 = 0.7

b. the emperical formula of 1st compound is

cu1.4o0.7

cu2o