Acids and bases

Question 1

Acids taste

Answer 1

sour

Question 2

Acids are

Answer 2

Proton doners

Question 3

Acids produce what ions when added to water

Answer 3

Hydrogen ions

Question 4

A substance can be tested to find if it is an acid
or a base using an

Answer 4

Indicator

Question 5

Indicators are

Answer 5

Methyl orange
Litmus
Phenol phthalein
Bromothymol Blue

Question 6

Methyl orange

Answer 6

pink/ orange = acid
yellow/orange = base

Question 7

Phenol phthalein

Answer 7

colourless = acid
Pink/red = base

Question 8

Bromothymol blue

Answer 8

Yellow/orange = acid
blue = base

Question 9

Litmus

Answer 9

red = acid
Blue/purple = base

Question 10

When acid donates a proton the species formed is called a

Answer 10

conjugate base

e.g. HA = ACID

HA –> H+ + A-

A- = Conjugate base

Question 11

what are the products of a proton transfer reaction

Answer 11

you get got products with acidic or basic character

Acidic product = Conjugate acid
Basic product = conjugate base

They have similar chem compos but the c a has proton add and the c b has proton removed

Question 12

Why has ionisation occured when HCl is added to water

Answer 12

cuz there were no ions before water is added
but once u add water ions are present and can carry a current

Question 13

Dissociation

Answer 13

find out

Question 14

Strong Acids

Answer 14

Gets fully ionised in water
Hydrochloric HCl
Sulfuric H₂SO₄
Nitric HNO₃

Question 15

Weak acids

Answer 15

Gets partially ionised in water - gets a reversible arrow

Question 16

Concentrated/dilute acid

Answer 16

Concentrated = high proportion of acid to water eg. 8.78 mol L-1

Dilute = low proportion of acid to water eg. 0.1 Mol L-1 or 1.0 mol L-1 (These react in predictable ways)