Question

1. You are provided with 1M solution of CuSO4. 2. Calculate how many grams of CuSO4 are dissolved in 100 mL of water to prepare this solution. Show your work in the space provided below. (Molar mass of CuSO4 = 159.6086 g/mol) (1 mark) Scso this . cutissu 159.6 خرداكولات و 3. Using a suitable transfer pipette transfer V. mL of your 1M Cuso. solution into a 100 ml volumetric flask. CV C 2V2 4. Using the equation CiV1=C2V2 calculate the volume of original solution (V) required to prepare a 0.05 M solution. Ci is the concentration of your initial solution. Show your work. (2 marks) 5. Add enough water to the volumetric flask to reach 100 mL in the. The volume of water (vw) that needs to be added to dilute the solution is Vw=V2-V1. What is Vw? (0 .5 mark) 6. Repeat steps 3-5 to obtain a 0.25 M solution. Solve for V, and Vw. Show your work. (2.5 marks)

Answer 1

2= we know that, molarity = Number of moles of solute Total volume a solution here, motwrity = Im and volume = 100ml 1 = Number of moles of solute 0.12 Numera moles a solute = ol wilight q cosoy = mole x Polecular weight 0.1 x 159.6086 = 15.96086 gram. 4) If we assume, we are taking y volume and make it 100 me so this is our ₂. So, 40,=C2 V2 IXVI = 0.05x100 [= sme) 5- If final volume is loome, the we added water; le volume a water added =V-u 7 95 me