concentrations sc14c

Question 1

State the meaning of the term
concentration.

Answer 1

the amount of substance in a certain volume of solution

Question 2

Calculate concentration in g dm⁻³.

Answer 2

concentration (g dm⁻³) = mass of solute (g) ÷ volume (dm³)

Question 3

Calculate concentration in mol dm⁻³.

Answer 3

concentration (mol dm⁻³) = number of moles (mol) ÷ volume (dm⁻³)

Question 4

Convert concentration in g dm⁻³ into concentration in mol dm⁻³.

Answer 4

divide by the relative formula mass

Question 5

Convert concentration in mol dm⁻³ into
concentration in g dm⁻³.

Answer 5

multiply by the relative formula mass