Concentration (Solutions)

Question 1

What is the formula for concentration

Answer 1

Moles / Volume (in litres) = Concentration

Question 2

Calculate the concentration of solution when 0.25 mols of potassium nitrate are dissolved in 590cm3 of water

Answer 2

0.25/0.5 = 0.5mols

(0.5 as the volume should be in litres)

Question 3

Calculate the number of moles in 200cm3 of 0.5 mol sodium hydroxide

Answer 3

0.5 x 0.2 = 0.1 mols

Question 4

How much is 1dm in cm

Answer 4

1dm = 1000cm

Question 5

What is the calculation for molar volume

Answer 5

Amount in mol x Molar volume = Volume