Question
In: Chemistry
A stuent was assigned to work with the compound copper (II) sulfate pentahydrate. The student prepared...
A stuent was assigned to work with the compound copper (II) sulfate pentahydrate. The student prepared a stock solution by weighing 0.817 grams of CuSO4.5H2O and diluting it with water to a final volume of 10.00mL. What is the concentration of this stock?
Answer:____________g/mL
From this stock solution, the student then took 1.00mL and diluted it to a final volume of 5.00mL with water. What is the final concentration of this diluted solution?
Answer:____________g/mL
Solutions
Expert Solution
A stuent was assigned to work with the compound copper (II) sulfate pentahydrate. The student prepared a stock solution by weighing 0.817 grams of CuSO4.5H2O and diluting it with water to a final volume of 10.00mL. What is the concentration of this stock?
Answer: To calculate the concentration in g/ml we need to divide the given mass by the volume
0.817 g / 10 ml = 0.0817 g / ml
So the concentration in g/ml is 0.0817 g/ml
From this stock solution, the student then took 1.00mL and diluted it to a final volume of 5.00mL with water. What is the final concentration of this diluted solution?
Answer: initial stock solution has concentration of C1= 0.0817 g/ml
Initial stock solution volume used V1= 1.0 ml
Final volume V2= 5.0 ml
Final concentration C2= ?
C1V1=C2V2
C2 = C1V1/V2
= 0.0817 g per ml * 1.0 ml / 5.0 ml
= 0.0163 g / ml
Therefore concentration of the diluted solution is 0.0163 g / ml
queen_honey_blossom answered 7 months agoRelated Solutions
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