Objective:
The purpose of this lab was to determine the identity of an unknown weak acid through an acid-base titration utilizing a strong base composed of 0.1M NaOH.
Concepts:
Molarity: Molarity is the concentration of a compound, and can be found through the formula M = mol/L. This concept was utilized to determine the concentration of the unknown solution.
Acid-Base Reaction: An acid-base reaction is a chemical reaction occurring between an acidic substance and a base substance, resulting in water and a salt. This concept was the reaction used for the lab's titration exercise.
Titration: A titration is the use of volume measurements to analyze an unknown. In acid-base chemistry, titration is most often used to analyze the amount of acid or base in a sample or solution.
Indicator: Indicators are usually added to acid-base titrations to detect the equivalence point. The end pointof the titration is the point at which the indicator changes color and signals that the equivalence point has indeed been reached.
Materials Used:
Safety:
MSDS:
Phenolphthalein indicator solution, 1.0%, 1mL
Sodium hydroxide solution, NaOH, 0.1M
Unknown weak acid
The purpose of this lab was to determine the identity of an unknown weak acid through an acid-base titration utilizing a strong base composed of 0.1M NaOH.
Concepts:
Molarity: Molarity is the concentration of a compound, and can be found through the formula M = mol/L. This concept was utilized to determine the concentration of the unknown solution.
Acid-Base Reaction: An acid-base reaction is a chemical reaction occurring between an acidic substance and a base substance, resulting in water and a salt. This concept was the reaction used for the lab's titration exercise.
Titration: A titration is the use of volume measurements to analyze an unknown. In acid-base chemistry, titration is most often used to analyze the amount of acid or base in a sample or solution.
Indicator: Indicators are usually added to acid-base titrations to detect the equivalence point. The end pointof the titration is the point at which the indicator changes color and signals that the equivalence point has indeed been reached.
Materials Used:
- Balance
- Beaker, 250mL
- Buret, 50mL
- Erlenmeyer Flask, 125mL or 250mL
- Funnel
- Magnetic Stirrer and Stir Bar
- pH Probe
- Data Collection Device
- Wash Bottle
- Phenolphthalein indicator solution, 1.0%, 1mL
- Sodium hydroxide solution, NaOH, 0.1M
- Unknown weak acid
- Distilled Water
Safety:
MSDS:
Phenolphthalein indicator solution, 1.0%, 1mL
Sodium hydroxide solution, NaOH, 0.1M
Unknown weak acid