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Acid and Alkali
Transcript of Acid and Alkali
What is Acid?
Acid come from the Latin word 'acidus' mean sour.
It turns blue litmus paper red.
A solution of acid has a pH of 1-6.
A lower pH means a higher acidity.
Chemicals or substances having the property of an acid are said to be acidic.
Acid in Food
EXAMPLES of ACIDIC FOOD
What is Alkali?
In chemistry, an alkali is a base.
Some author also define an alkali as a base that dissolves in water.
It turns red litmus paper blue.
A solution of a soluble base has a pH greater than 7.
Chemical or substances having a properties of an alkali is called
EXAMPLES of ALKALINE FOOD
By: LiN LiN
Orange - Citric acid
Apple - Malic acid
Lime Lemon - Citric acid
Somtam ( Tomatoes ) - Salicylic acid
Grapes - Tartalic acid
Hamburger & French Fries
Added to food and drinks to give a pleasant sour taste.
As a polishing agent for metals.
As a favoring in food and drinks.
To produce fruit salts or health salts.
Used in car batteries and fire extinguishers.
To produce fertilizers and detergents.
To clean metals before they are coated.
As cleansing agent in toilet cleaners.
Example Uses of Acid and Alkali
To produce soaps, detergents, plastics, and rayon.
To produce cement, mortar, soda lime, and glass.
To neutralize acidic soil in agriculture.
To prevent the coagulation of latex.
As a cleaning agent in glass and window cleaners
To produce nitric acid and fertilizers.
To produce medicines such as antacids, milk of magnesia and Epsom salt.