Chemistry · Unit 3 · Chemical equilibrium systems · Chemical equilibrium
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A 0.10 mol/L solution of hydrofluoric acid (HF) undergoes 8.0% ionisation at equilibrium, while a 0.10 mol/L solution of nitric acid (HNO\(_3\)) undergoes 100% ionisation. Which of the following best explains the difference in acid strength between HF and HNO\(_3\)?
Two acids, HX and HY, are dissolved separately in water to form 0.10 M solutions. HX undergoes 45% ionisation at equilibrium, while HY undergoes 2.5% ionisation at equilibrium. Which statement best explains the relative strength of these acids?
Two acids, nitrous acid (HNO\(_2\)) and perchloric acid (HClO\(_4\)), are each dissolved in water at the same concentration of 0.10 mol L\(^{-1}\). The nitrous acid solution has a pH of 2.15, while the perchloric acid solution has a pH of 1.00. Explain why perchloric acid is classified as a stronger acid than nitrous acid.