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To determine which of the following is a weak acid, we need to understand the concept of acid strength. The strength of an acid is based on its ability to donate protons (H+ ions) in a solution.
Among the options provided:
a. Hydrofluoric Acid - This is a weak acid. Hydrofluoric Acid, with the chemical formula HF, is considered a weak acid due to its incomplete dissociation in water and its low tendency to donate protons compared to strong acids.
b. Chloric Acid - This is a strong acid. Chloric Acid, with the formula HClO3, is a strong acid that completely dissociates in water, releasing all its protons.
c. Sulfuric Acid - This is a strong acid. Sulfuric Acid, H2SO4, is also a strong acid that fully dissociates in water, making it a powerful proton donor.
d. Perchloric Acid - This is a strong acid. Perchloric Acid, HClO4, is a strong acid that dissociates completely in water, exhibiting strong acidic properties.
In conclusion, the weak acid among the options given is Hydrofluoric Acid (a). It's essential to understand the dissociation behavior of acids to differentiate between weak and strong acids. Remember, weak acids only partially ionize in water, while strong acids ionize completely.
