Question

one litre of sea water weighs 1050 g and contains 6×10^-3 g of dissolved oxygen gas. calculate the concentration of the dissolve oxygen in ppm.​

Answer 1

Given info : one litre of sea water weighs 1050 g and contains 6 × 10^-3 g of dissolved oxygen gas.

To find : The concentration of the dissolved oxygen in ppm is ...

solution : concentration (in ppm ) of solute in a solution is given by,

= number of parts of a component/total no of parts of all components × 10⁶

here,

no of parts of a component = mass of oxygen gas = 6 × 10¯³ g

total no of parts of all components = mass of sea water = 1050 g

∴ concentration = (6 × 10¯³)/1050 × 10⁶

= 5.714 ppm

Therefore the concentration of the dissolved oxygen in ppm is 5.714