What is the strongest acid among the following options? A - HSC - SSCE Chemistry - Question 17 - 2017 - Paper 1

To determine the strongest acid among the options given, we need to analyze the acidic strength of each:

1. Citric Acid (Option A & B): Citric acid is a weak organic acid, primarily found in citrus fruits. It has a relatively low acidity compared to other strong acids.

2. Hydrochloric Acid (Option C): Hydrochloric acid is a strong acid, fully dissociating in water to release hydrogen ions. It has a high acid dissociation constant, indicating its strength as an acid.

3. Sulfuric Acid (Option D): Sulfuric acid is also a strong acid. It is known for its high level of acidity and ability to dissociate fully in aqueous solutions. It is one of the strongest acids available.

Based on this analysis, both Hydrochloric and Sulfuric acids are strong acids, but sulfuric acid is generally considered stronger than hydrochloric acid. Therefore, the correct choice is C. Hydrochloric.