Question

PART A

How many milliliters of a stock solution of 7.00 M HNO3 would you have to use to prepare 0.200 L of 0.490 M HNO3?

PART B

If you dilute 17.0 mL of the stock solution to a final volume of 0.280 L , what will be the concentration of the diluted solution?

Answer 1

Part A stock colution m = 7.00M v = ? diluted M = = solution 0.490 0.200 L For dilution mri = m₂ V2 => a = M₂ Vz (6.490 M) Co. 2004) 7.00M v = 0.0 140 L IL: looom.L V = v = 0.0 140x1000 mL 14.0mL 14.0mL Stock exbution m = 7.00m volume = 17.0mL VE 17.0 L diluted solution M₂ = ? V = 0.280L 1000 V = 0.0170L -M₂₂ For Mys dilution : mv - M₂ 7.00M) (0.0170L) 0.280L - m. 0.425M = m₂ 10.42M