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Which of the following compounds is a strong acid?

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Question: Which of the following compounds is a strong acid?

Options:

  1. H2O
  2. H2SO4
  3. H2O2
  4. NH3

Correct Answer: H2SO4

Solution: 

H2SO4 (sulfuric acid) is a strong acid, while H2O is neutral, H2O2 is a weak oxidizer, and NH3 is a weak base.

Which of the following compounds is a strong acid?

Practice Questions

Q1
Which of the following compounds is a strong acid?
  1. H2O
  2. H2SO4
  3. H2O2
  4. NH3

Questions & Step-by-Step Solutions

Which of the following compounds is a strong acid?
  • Step 1: Understand what a strong acid is. A strong acid is a substance that completely dissociates into its ions in water.
  • Step 2: Look at the compounds given: H2SO4, H2O, H2O2, and NH3.
  • Step 3: Identify H2SO4 (sulfuric acid). It is known to completely dissociate in water, making it a strong acid.
  • Step 4: Check H2O (water). It is neutral, meaning it does not act as an acid or a base.
  • Step 5: Check H2O2 (hydrogen peroxide). It is a weak oxidizer and does not act as a strong acid.
  • Step 6: Check NH3 (ammonia). It is a weak base, not an acid.
  • Step 7: Conclude that H2SO4 is the only strong acid among the options.
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