Which of the following compounds is a strong acid derived from hydrogen?

Which of the following compounds is a strong acid derived from hydrogen?

Step 1: Understand what a strong acid is. A strong acid is a substance that completely dissociates in water to produce hydrogen ions (H+).
Step 2: Look at the compounds given: Hydrochloric acid (HCl), water (H2O), ammonia (NH3), and methane (CH4).
Step 3: Identify which of these compounds can produce H+ ions when dissolved in water.
Step 4: Recognize that HCl is a strong acid because it dissociates completely in water to form H+ and Cl- ions.
Step 5: Note that water (H2O) is neutral, ammonia (NH3) is a weak base, and methane (CH4) is a hydrocarbon that does not act as an acid.
Step 6: Conclude that the only strong acid derived from hydrogen in the list is hydrochloric acid (HCl).

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