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Which statement is correct about weak acid? Statement 1: An acid that is completely ionized in water and thus produces a very small amount of hydrogen ions is called a weak acid.  Statement 2: Carbonic acid and sulfurous acid are also strong acids.

Which statement is correct about weak acid? Statement 1: An acid that is completely ionized in water and thus produces a very small amount of hydrogen ions is called a weak acid.  Statement 2: Carbonic acid and sulfurous acid are also strong acids. Correct Answer Statement 1 is correct

The correct answer is 1 i.e. Statement 1 is correct.

Explanation:

  • An acid that is completely ionized in water and thus produces a small amount of hydrogen ions is called a weak acid. 
  • Acetic acid is partially ionized in water, so it is a weak acid.
  • Carbonic acid and sulfurous acid are also weak acids because they are partially ionized in water to produce a small amount of hydrogen ions. 
  • Due to a small amount of hydrogen ions in their solution, weak acids react very quite slowly with other substances (such as metals, metal carbonates and metal hydrogen carbonates, etc). 
  • Weak acids also have a low electrical conductivity because of the low concentration of hydrogen ions in their solution.
  • Thus, all the weak acids are weak electrolytes. 

Related Questions

Which statement is correct about strong acid? Statement 1: An acid that is completely ionized in water and thus produces a very small amount of hydrogen ions is called a strong acid.  Statement 2: Sulphuric acid and nitric acid are also strong acids.
Which one of the following statements is not true/false?
1. An acid that is completely ionized with ions produces large amounts of H+ ions. for example HCl, H2SO4, HNO3
2. A weak acid that is partially ionized in water produces small amounts of H+ ions. for example - CH3COOH, H2CO3, H2SO3
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Which of the following statements is true/false?
1. An alkali that is completely ionized in water produces a large number of OH- ions. For example NaOH, KOH
2. An alkali that is partially ionized in water produces a large number of OH+ ions. For example KOH
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