Determention of the W/V acetic acid in vinegar sample

Vinegar
• is a liquid consisting of about 5–20% acetic acid (CH3COOH),
water, and other trace chemicals, which may include flavorings.
The acetic acid is produced by the fermentation of ethanol by
acetic acid bacteria


• Acetic acid that contains a very low amount of water (less than
1%) is called anhydrous (water-free) acetic acid or glacial acetic
acid.
• The reason it s called glacial is because it solidifies into solid
acetic acid crystals just cooler than room temperature at 16.7
°C, which ice. Removing the water from acetic acid lowers its
melting point by 0.2 °C

? Aim of Experiment: Determination of %w/v Acetic Acid
Principle:
? in an unknown Vinegar sample .
? Acetic acid is a weak acid Ka = 1.8 x 10-5 , So titration of acetic
acid against NaOH is a titration of a weak acid against a strong
base. The end point will be not very sharp



Vinegar
• is a liquid consisting of about 5–20% acetic acid (CH3COOH),
water, and other trace chemicals, which may include flavorings.
The acetic acid is produced by the fermentation of ethanol by
acetic acid bacteria


• Acetic acid that contains a very low amount of water (less than
1%) is called anhydrous (water-free) acetic acid or glacial acetic
acid.
• The reason it s called glacial is because it solidifies into solid
acetic acid crystals just cooler than room temperature at 16.7
°C, which ice. Removing the water from acetic acid lowers its
melting point by 0.2 °C

? Aim of Experiment: Determination of %w/v Acetic Acid
Principle:
? in an unknown Vinegar sample .
? Acetic acid is a weak acid Ka = 1.8 x 10-5 , So titration of acetic
acid against NaOH is a titration of a weak acid against a strong
base. The end point will be not very sharp


Vinegar
• is a liquid consisting of about 5–20% acetic acid (CH3COOH),
water, and other trace chemicals, which may include flavorings.
The acetic acid is produced by the fermentation of ethanol by
acetic acid bacteria


• Acetic acid that contains a very low amount of water (less than
1%) is called anhydrous (water-free) acetic acid or glacial acetic
acid.
• The reason it s called glacial is because it solidifies into solid
acetic acid crystals just cooler than room temperature at 16.7
°C, which ice. Removing the water from acetic acid lowers its
melting point by 0.2 °C

? Aim of Experiment: Determination of %w/v Acetic Acid
Principle:
? in an unknown Vinegar sample .
? Acetic acid is a weak acid Ka = 1.8 x 10-5 , So titration of acetic
acid against NaOH is a titration of a weak acid against a strong
base. The end point will be not very sharp