Chapter: Amount of Concentrations of Solutions (Give an explanation or calculation for each question) 1. Why is a volumetric flask preferred over a
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Chapter: Amount of Concentrations of Solutions (Give an explanation or calculation for each question)1.

Why is a volumetric flask preferred over a graduated cylinder when making a solution of a certain amount concentration? 

2. scenario - The procedure for making a solution says to use massing paper to measure the solute on a balance. 

(a) What are some potential problems you must guard against when using massing paper? 

(b) What are some potential problems you might encounter if you tried to measure the mass of solute needed directly into a volumetric flask? 

3. What mass of sodium chloride is needed to make 465 mL of a solution that has an amount concentration of 0.25 mol/L? 

4. What is the amount concentration of a solution that is composed of 65.4 g of potassium nitrate dissolved in 350 mL of solution? 

5. What volume of solution that has an amount concentration of 0.45 mol/L can be made using 34.5 g  of potassium chloride?


Chapter: Dilution of Solutions 


1. Explain the phrase "Always Add Acid" as it pertains to diluting solutions and the potential hazards of failing to follow this rule. 

2. How are the amount concentration and the volume of solution related when diluting solutions? 

3. What is the function of a volumetric pipette when preparing dilutions?  

4. The table shows the concentrations of some acid solutions available from a chemical supply company.

(a) Fill in the third column with the volume of each acid solution that would be needed to produce 1.50 L of a solution with an amount concentration of 2.0 mol/L. 

Table 1 Amount Concentrations of Common Stock Acid Solutions.JPG

(b) If you have a 250.0 mL volumetric flask, what concentration of nitric acid solution can you make using 10.0 mL of the stock solution?

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Subject: Chemistry, Science
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