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Questions and Answers
Which type of acid gives one hydrogen ion per molecule of the acid in solution?
Which category of acids ionizes completely in water?
What is the main source of inorganic acids?
Which acid type gives three hydrogen ions per molecule in solution?
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What characterizes weak acids in terms of ionization?
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What is the common element present in all acids?
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Which of the following compounds is NOT an acid?
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Which indicator turns colourless in acids?
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What acid is known as the 'King of chemicals' and used in car batteries?
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Which acid is used in food preservation as the salt sodium benzoate?
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Which type of acid gives two hydrogen ions per molecule of the acid in solution?
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What characterizes strong acids in terms of ionization?
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Which acid is commonly found in vinegar?
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Why are mineral acids stored in glass bottles?
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Which type of acid is Uric acid?
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What type of acids are Hydrochloric acid, Nitric acid, and Sulphuric acid?
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Study Notes
Classification of Acids
- Acids present in plants and animals are organic acids, e.g., HCOOH, CH3COOH, which are weak acids.
- Acids from rocks and minerals are inorganic acids or mineral acids, e.g., HCl, HNO3, H2SO4, which are strong acids.
Types of Acids Based on Ionization
- Strong acids: completely ionize in water, e.g., HCl.
- Weak acids: partially ionize in water, e.g., CH3COOH.
Monobasic, Dibasic, and Tribasic Acids
- Monobasic acid: gives one hydrogen ion per molecule of the acid in solution, e.g., HCl, HNO3.
- Dibasic acid: gives two hydrogen ions per molecule of the acid in solution, e.g., H2SO4, H2CO3.
- Tribasic acid: gives three hydrogen ions per molecule of the acid in solution, e.g., H3PO4.
Sources of Organic Acids
- Citric acid: found in citrus fruits like lemons and oranges.
- Lactic acid: found in sour milk.
- Formic acid: found in the stings of bees and ants.
- Butyric acid: found in rancid butter.
- Tartaric acid: found in tamarind, grapes, and apples.
- Acetic acid: found in vinegar.
- Malic acid: found in apples.
- Uric acid: found in urine.
- Oxalic acid: found in tomatoes.
- Stearic acid: found in fats.
- Cholic acid: found in bile acids.
Characteristics of Acids
- Acids have a sour taste.
- Strong acids are corrosive in nature.
- Hydrogen is the common element present in all acids.
- Acids react with metals to produce hydrogen gas.
- Acids turn blue litmus to red.
- The indicator phenolphthalein is colorless in acids.
- The indicator methyl orange is red in acids.
- Acids are good conductors of electricity.
Uses of Acids
- Sulphuric acid (King of chemicals) is used in car batteries.
- Nitric acid is used in the production of ammonium nitrate, which is used as fertilizer in agriculture.
- Hydrochloric acid is used as a cleansing agent in toilets.
- Tartaric acid is a constituent of baking powder.
- Salt of benzoic acid (sodium benzoate) is used in food preservation.
- Carbonic acid is used in aerated drinks.
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Description
Test your knowledge of organic and inorganic acids with this quiz covering types of acids such as weak and strong acids, monobasic, dibasic, and tribasic acids. Learn about acids found in plants, animals, rocks, and minerals.
