Redox

Question 1

Solubility rules: Nitrates

Answer 1

all nitrates are soluble in water

Question 2

Solubility rules: Sodium, Potassium (group 1 elements) and ammonium compounds

Answer 2

soluble in water

Question 3

Solubility rules: Chlorides

Answer 3

most are soluble in water - except lead chloride and silver chloride

Question 4

Solubility rules: Sulfates

Answer 4

most are soluble in water - except lead sulfate and barium sulphate

Question 5

Solubility rules: Oxides, hydroxides and carbonates

Answer 5

mostly insoluble - sodium and potassium are soluble. (calcium hydroxide is slightly soluble)

Question 6

oxidation

Answer 6

loss of electrons

Question 7

reduction

Answer 7

gain of electrons

Question 8

oxidising agent

Answer 8

a species that removes electrons from another

Question 9

reducing agent

Answer 9

a species that gives electrons to another

Question 10

disproportionation reaction

Answer 10

a species is simultaneously oxidised and reduced

Question 11

fluorine standard state

Answer 11

yellow gas - toxic

Question 12

chlorine standard state

Answer 12

green gas - toxic, v reactive

Question 13

bromine standard state

Answer 13

orange liquid - toxic, v volatile, v reactive

Question 14

iodine standard state

Answer 14

grey solid - toxic, reactive, turns to purple gas on heating

Question 15

colour of halide salts

Answer 15

colourless

Question 16

trend down group of oxidising power of halides

Answer 16

decrease

Question 17

trend down group of reducing power of halides

Answer 17

increase

Question 18

oxidising agent

Answer 18

a species which removes electrons from another

Question 19

reducing agent

Answer 19

a species which gives electrons to another

Question 20

sulfur standard state

Answer 20

yellow solid

Question 21

base

Answer 21

something which neutralises an acid to form a salt

Question 22

alkali

Answer 22

base which dissolves in water

Question 23

acid + alkali ->

Answer 23

salt + water