1.9 titrations

Question 1

what ions does an acid release and therefore what is it defined as

Answer 1

An acid releases H+ ions and is therefore defined as a proton donor

Question 2

the strength of an acid is a measure of its……

Answer 2

degree of dissociation

Question 3

Bases are defined as what

Answer 3

proton acceptors

Question 4

3 indicators in strong acid/strong base and what they turn to in each

Answer 4

Bromothymol blue - yellow in acid and blue in base
Phenolphthalein - colourless in acid and pink in alkali
Methyl orange - red in acid and yellow in alkali

Question 5

strong acid/strong base and what it turns to in each

Answer 5

methyl orange - red in acid and yellow in alkali

Question 6

weak acid/strong base

Answer 6

phenolphthalein - colourless in acid and pink in alkali

Question 7

how to work out concentration

Answer 7

concentration = moles divided by volume

Question 8

what do i always forget when workout out the concentration

Answer 8

turn cm into dm

Question 9

steps for calculating unknowns from titration results

Answer 9

calculate moles from known element quantities
use the mole ratio from equation to work out moles of unknown
use moles to work out unknown value

Question 10

what is the definition of a standard solution

Answer 10

A standard solution is a solution for which the concentration is accurately known

Question 11

how to calculate percentage error of a titre

Answer 11

(2 x 0.005/titration value) x 100