How do you make a 0.05 M bromine solution?

Bromine (0.05 M) 

Molecular formula: Br₂  

Molecular weight: 159.81 

Preparation: Dissolve 3 g of potassium bromate and 15 g of potassium bromide in sufficient water to produce 1000 mL. 

Standardization: Pipette 25.0 mL of the solution into a 500 mL iodine flask and dilute with 120 mL of water. Add 5 mL of hydrochloric acid and insert the stopper in the flask and shake it gently. Add 5 mL of potassium iodide solution again insert the stopper and allow it to stand for 5 minutes in the dark. Titrate the liberated iodine with 0.1 M sodium thiosulphate using 3 mL of starch solution, added towards the end of the titration, as an indicator. Store the solution in dark amber-colored, glass stoppered bottles. 

Reaction: 

Br₂ + S₂O²⁻₃ + H₂O → 2Br + 2SO²⁻₄ + 2H⁺

Factor: 

1 mole of Na₂S₂O₃ ≅ 1 mole of bromine 

1000 mL of 1M Na₂S₂O₃ ≅ 159.81 g of Br₂  

1 mL of 0.1 M Na₂S₂O₃ ≅ 0.01598 g of Br₂

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