ACIDS
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Questions and Answers

Which indicator turns red in the presence of acids?

  • Bromothymol blue
  • Phenolphthalein
  • Methyl orange (correct)
  • Litmus
  • What is the main reason why acids are stored in glass bottles?

  • To prevent them from corroding the container (correct)
  • To enhance their conductivity
  • To keep them at a constant temperature
  • To increase their reactivity
  • Which compound is NOT an acid according to the text?

  • Glucose
  • Methane
  • Sulphuric acid (correct)
  • Ammonia
  • What is the common element present in all acids according to the text?

    <p>Hydrogen</p> Signup and view all the answers

    Which acid is referred to as the 'King of Chemicals'?

    <p>Sulphuric acid</p> Signup and view all the answers

    What is the strongest acid mentioned in the text?

    <p>Fluoro sulphuric acid</p> Signup and view all the answers

    What is the Latin meaning of the word 'acid'?

    <p>Sour</p> Signup and view all the answers

    Which type of acid gives two hydrogen ions per molecule in a solution?

    <p>Dibasic acid</p> Signup and view all the answers

    Which acid is found in citrus fruits like lemons and oranges?

    <p>Citric acid</p> Signup and view all the answers

    What characteristic defines strong acids?

    <p>They ionize completely in water</p> Signup and view all the answers

    Which of the following acids is not classified as an organic acid?

    <p>Hydrochloric acid</p> Signup and view all the answers

    What property of mineral acids makes them corrosive?

    <p>They can eat away metal, skin, and clothes</p> Signup and view all the answers

    Study Notes

    • Acids are chemical substances with replaceable hydrogen atoms and the word "acid" comes from the Latin word 'acidus' meaning sour.
    • Organic acids are found in plants and animals, while inorganic acids come from rocks and minerals.
    • Acids can be classified into monobasic, dibasic, or tribasic acids based on the number of hydrogen ions they give per molecule in solution.
    • Strong acids like HCl ionize completely in water, while weak acids like CH3COOH ionize partially.
    • Acids have properties like a sour taste, corrosiveness, ability to react with metals to produce hydrogen gas, and changing the color of indicators like litmus and phenolphthalein.
    • Some common organic acids include citric acid in citrus fruits, lactic acid in sour milk, and acetic acid in vinegar.
    • Mineral acids like hydrochloric acid, nitric acid, and sulfuric acid are commonly used in laboratories and are corrosive to metals and organic materials but not glass or ceramics.
    • Some uses of acids include sulfuric acid in car batteries, nitric acid in fertilizer production, and hydrochloric acid as a cleansing agent.
    • Sulphuric acid (H2SO4) is known as the "king of chemicals" due to its industrial importance, and fluoro sulphuric acid (HFSO3) is considered the strongest acid in the world.

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    Description

    Learn about the different types of acids including organic acids and inorganic acids. Explore examples of weak acids and strong acids like monobasic and dibasic acids.

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