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Lesson Worksheet: Volumetric Analysis Chemistry
In this worksheet, we will practice describing volumetric analysis and using results from titration experiments to calculate the concentration of a solution.
A titration experiment was performed to determine the concentration of sulfuric acid using a known concentration of potassium hydroxide. 100 mL of sulfuric acid was placed in a conical flask and a few drops of phenolphthalein indicator were added. A 0.6 M solution of potassium hydroxide was then slowly added into the conical flask. The amount of potassium hydroxide added and any observations were recorded.
|Volume of Added (mL)||35.4||35.6||35.8||36.0||36.2||36.4||36.6||36.8||37.0||37.2||37.4||37.6|
|Observations||Colorless||Colorless||Colorless||Pink color that fades quickly to colorless||Pink color that fades quickly to colorless||Pink color that fades slowly to colorless||Pink color that fades slowly to colorless||Pink color that lasts ~30 seconds||Pink||Pink||Pink||Pink|
At what volume was the end point of the reaction reached?
What was the concentration of the sulfuric acid? Give your answer to 3 decimal places.
The concentration of a sample of milk of magnesia, , was determined by titration with phosphoric acid . 30 mL of milk of magnesia required 54.8 mL of 0.5 M phosphoric acid to neutralize it. The equation for this reaction is shown:
What was the concentration of the milk of magnesia?
What volume of 0.5 M sulfuric acid would completely neutralize 125 mL of 0.1 M sodium hydroxide?
During a titration, 22.4 mL of 0.100 M was required to neutralize the acidic analyte.
Calculate the number of moles of sodium hydroxide in the titer.
- A0.224 mol
- B mol
- C4.46 mol
- D mol
- E2.24 mol
Calculate the number of grams of sodium hydroxide in the titer. [, , ]
A student performed a neutralization titration. The titration took 80 mL of an 0.500 M solution to neutralize 241 mL of solution. Determine the concentration of in units of millimolar.
- A15.0 millimolars
- B0.166 millimolars
- C1.50 millimolars
- D0.500 millimolars
- E166 millimolars
A student performs a neutralization titration. The titration took 80.0 mL of a 0.50 M solution to neutralize 241 mL of solution. Determine the concentration of in units of molarity, giving your answer to 2 decimal places.