Question

1.

Using the equation C1V1 = C2V2, calculate the volume (V1) of concentrated solution and the volume of water needed to dilute the following solutions: Concentration Volume (in mls) Concentration of Volume (in mls) of Volume (in mls) of diluted of desired available stock stock solution required of solvent solution desired solution (V2) solution (C1) to make the diluted required to (C2) solution (V1) achieve desired volume (V2-V1) 5 mg/ml 100 ml 1000 mg/ml 15% 10 ml 50% 0.250 M 100 ml 4M 10 mg/ml 1000 ml 100 mg/ml

2.

Answer 1

Concentration of each of the dilution is as follows;

S1: 800 ug/mL

S2: 160 ug/mL

S3: 32 ug/mL

S4: 6.4 ug/mL

해 Concentration of diluted solution desired (cz) Volume (in mils) Conco 띰 available Volumelinnes) Volume of of desired sohn. (V2) stock solu. ((1) of stock soon. solvent required to make to achieve desired diluted solen (v1) rolume (V2 - Va) required to 5 mg/ml 100 ml 1000 mg/ml civo=C2 V2 ot, vi cavi puo-0.5) = 99.5 ml c. Ovv, : 5x100 I ovo 0.5 ml 15 of 10 ml 50 of 15 x 10 : 10-3) 50 = 7 ml 3 ml 0. 250 M 100 ml 4 M 0.25 X 100 4 :(100- 6.25) = 93.75 ml 6.25 ml = TO X loco 100 to mg/me (1000-IVO) = 900 me 1 до мі 100 mg/ml 100 ml 2.2 2mL 2 mL 2mL 2mL zmil 80 182 stock sohn. 4000 pg/mL 8ml water 8mL mature 8 ml water 8 ml water 2:10 2:10 2:10 dilution dilution 2: 10 dilution dilution 32 g/m2 6.4 ug/mL 800 ug/mL 160 Mylml the dut dilution; Concentration af af 8, = 800 ug/mL S2 = 160 ug/ml 32 ug/mL 84 83 6.4 ug/mL