2.2

Question 1

symbol equation for ethanoic acid

Answer 1

CH3COOH

Question 2

what colour precipitate with iron II and III ions produce

Answer 2

green and brown

Question 3

equation for neutralisation

Answer 3

H+ + OH- ——> H2O
aq, aq, l

Question 4

purpose of indicator in titration

Answer 4

to know when neutralisation has taken place

Question 5

how to get largest possible crystals

Answer 5

leave to evaporate/crystallise naturally on a window sill

Question 6

activation energy meaning

Answer 6

minimum energy required to activate a reaction

Question 7

how to tell which solution is which

Answer 7

vigorous reactions, exothermic so quicker temp rise, quick fizzing

Question 8

difference between strong acids/alkali and weak acids/alkali

Answer 8

strong can completely dissociate in water and weak dont fully

Question 9

difference between strength and concentration

Answer 9

strength is the proportion of hydrogen or hydroxide ions released
concentration is how much acid there is in one litre (1dm3) of water

Question 10

what do acids and metal hydroxide/oxides form

Answer 10

salt and water

Question 11

what do acids and metal / metal carbonates form

Answer 11

salt and hydrogen
salt and water and carbon dioxide

Question 12

what letter do all acids have infront of them in a symbol equation

Answer 12

H

Question 13

what does an acid and base make

Answer 13

salt and water