Acids and Redox

Question 1

What is the difference betweena strong acid and a weak acid

Answer 1

Strong acids full dissciate their H+ ions whereas weak acids only partially dissociate

Question 2

What is a base

Answer 2

Something that neutralises an acid to form a salt

Question 3

What is an alkali

Answer 3

a base that has dissolved in water to release OH- ions

Question 4

What are the 3 neutralisation products, and which one is only formed when a Carbonate base is used

Answer 4

Salt
Water
CO2 (carbonate base)

Question 5

What is the Oxidation number of O in a peroxide

Answer 5

-1

Question 6

What is the Oxidation number of H in a metal hydride

Answer 6

-1

Question 7

What is the Oxidation number of O when it is bonded to F

Answer 7

+2

Question 8

What is the Oxidation number of N in NO3-

Answer 8

+5

because O= -2
-2 x 3 = -6
-6 + ? = -1
? = +5

Question 9

What is Redox

Answer 9

Oxidation and Reduction

Question 10

What is Oxidation in terms of electrons

Answer 10

Oxidation is Loss of electrons

Question 11

What is Reduction in terms of electrons

Answer 11

Reduction is Gaining of electrons

Question 12

Define a disproportionation reaction

Answer 12

A reaction where 1 species is both oxidised and reduced.