Acid and alkalis, paper 1 Flashcards Preview

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Flashcards in Acid and alkalis, paper 1 Deck (33)
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1

Ph1

Red

2

pH 2

Red/orange

3

PH 3

Orange

4

PH 4

Dark yellow

5

PH 5

Yellow light almost hint of green

6

PH 6

Light green

7

PH 7

Green

8

PH 8

Dark green

9

PH 9

Turquoise

10

PH 10

Light blue

11

PH 11

Blue

12

PH 12

Navy blue

13

PH 13

Very dark blue/ purpleish

14

PH 14

Purple

15

Methanol orange in acid

Red

16

Methanol orange in neutral

No change, orange.

17

Methanol orange in alkali

Orange.

18

Phenolphthalein in acid

Colourless

19

Phenolphthalein in neutral

No change, colourless

20

Phenolphthalein in alkali

Pink

21

Acid + metal =

salt + hydrogen

22

Metal carbonate + acid =

Salt + water + carbon dioxide

23

Acid + alkali/base =

Salt + water

24

Acid + alkali =

Salt + water

25

Titration

To find out how much acid it takes for neutralise an amount of alkali to end point.

26

Salt that are solvable in water:

All nitrates
Most chlorides
Most sulphites
Sodium...
potassium..
ammonium...

27

Salts that are insoluble in water

Most carbonates
Most hydroxides
Lead...
silver chloride
Barium sulphate
Calcium sulphate

28

In all acids:

H+ ion

29

In all alkali’s

OH- ion

30

Strength of a acid or alkali

Is determined by how many H+ or OH- ions they have to dissociate.