Precipitation Equation + Concentration

Question 1

What is an ion?

Answer 1

Ion is an atom that has loss or gain electrons.

Question 2

What is precipitation reaction?

Answer 2

When two liquids react to form a solid (precipitate)

Question 3

Precipitation Equations Rules

Answer 3

Product is: 1+4,3+2

e.g: (Lead(1) nitrate(2) + potassium(3) iodide(4)) = (Lead iodide + Potassium Nitrate)

Question 4

What is Spectator Ions?

Answer 4

Ions not involved in the reaction.

Question 5

Rules to spot spectator ions!

Answer 5

• Nitrate = All spectator
• Chlorides = Mostly spectator; silver + lead chlorides are precipitate
• Sulphates = Mostly Spectator; barium and lead sulphates are precipiate
• Carbonates = mostly precipiate; sodium and potassium carbonates are spectator.

Question 6

What is Concentration?

Answer 6

Concentration is the amount of solute (things that get dissolved) dissolved into a volume of solvent (things that does the dissolving)

Question 7

Equation of concentration

Answer 7

Concentration = Mass / Volume

Question 8

Concentration measured in?

Answer 8

g/dm³

Question 9

Mass measured in?

Answer 9

gram

Question 10

Volume measured in?

Answer 10

dm³

decimetre

Question 11

Remember this (1)

Answer 11

1dm³ = 1000cm³

Question 12

Recall (1)

Answer 12

1dm³ = 1000cm³

Question 13

Spector or Precipitate

Sodium Nitrate

Answer 13

Spectator

Question 14

Spectator or nitrate

Potassium sulphate

Answer 14

spectator

Question 15

Lead chloride

Answer 15

precipitate

Question 16

sodium carbonates

Answer 16

spectator

Question 17

lead sulphates

Answer 17

precipitate

Question 18

How big is 1 moles

Answer 18

6.02* 10²³

Question 19

Equation for Moles

Answer 19

Number of Moles = Mass of substance/ molar mass