Question

15mL of 0.02M Na2SO3 solution react complete with 10 mL of copper solution.

Calculate the amount of Cu2+ ion 10 mL solution and per liter of solution.

Answer 1

Number of moles in 15 ml of solution is

(15/1000)× 0.02= 0.0003moles

Same number of mole of copper solution react

Molarity of copper ions is given by;

(1000/ 10)× 0.0003

Molarity = 0.03M