C3.4 Further Quantitive

Question 0

What are the colour changes for universal indicator?

Answer 0

Red to purple

Question 1

What’s the equation for concentration?

Answer 1

Concentration=mole/volume (x1000 if in cm3)

Question 2

What are the colour changes for methyl orange?

Answer 2

Red to yellow

Question 3

What are the colour changes for phenolphthalein?

Answer 3

Colourless to pink

Question 4

What’s the gas test for carbon dioxide?

Answer 4

Lime water turns cloudy

Question 5

What’s the gas test for hydrogen?

Answer 5

Squeaky pop

Question 6

What’s the gas test for oxygen?

Answer 6

Relight a spill

Question 7

What’s the gas test for ammonia?

Answer 7

Turns damp red litmus paper blue

Question 8

What’s the gas test for sulfate?

Answer 8

Turns damp blue litmus paper red

Question 9

What’s the gas test for chlorine?

Answer 9

Bleaches damp litmus paper

Question 10

In the flame test, what colour flame is lithium?

Answer 10

Bright red

Question 11

In the flame test, what colour flame is sodium?

Answer 11

Yellow

Question 12

In the flame test, what colour flame is potassium?

Answer 12

Lilac

Question 13

In the flame test, what colour flame is calcium?

Answer 13

Brick red

Question 14

In the flame test, what colour flame is barium?

Answer 14

Green

Question 15

Effect of sodium hydroxide on calcium?

Answer 15

White ppt, insoluble in excess

Question 16

Effect of sodium hydroxide on magnesium?

Answer 16

White ppt, insoluble in excess

Question 17

Effect of sodium hydroxide on aluminium?

Answer 17

White ppt, soluble in excess

Question 18

Effect of sodium hydroxide on ammonium?

Answer 18

Ammonia produced in warming

Question 19

Effect of sodium hydroxide on copper?

Answer 19

Light blue ppt, insoluble in excess

Question 20

Effect of sodium hydroxide on iron 2?

Answer 20

Green ppt, insoluble in excess

Question 21

Effect of sodium hydroxide on iron 3?

Answer 21

Red/brown ppt, insoluble in excess

Question 22

Result when acidify with nitric acid and silver nitrate to chloride?

Answer 22

White ppt

Question 23

Result when acidify with nitric acid and silver nitrate to bromide?

Answer 23

Cream ppt

Question 24

Result when acidify with nitric acid and silver nitrate to iodide?

Answer 24

Yellow ppt

Question 25

Result when adding hydrochloric acid then barium chloride to sulphate?

Answer 25

White ppt

Question 26

Result when adding acid to carbonate?

Answer 26

Limewater goes cloudy

Question 27

Result when sodium hydroxide and aluminium powder is warmed with nitrate?

Answer 27

Ammonia produced