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What did the Brønsted–Lowry definition of acids identify that made it a significant improvement over earlier definitions? (A) Acids contain hydrogen - HSC - SSCE Chemistry - Question 7 - 2002 - Paper 1
Question 7
What did the Brønsted–Lowry definition of acids identify that made it a significant improvement over earlier definitions? (A) Acids contain hydrogen. (B) Acids are... show full transcript
Worked Solution & Example Answer:What did the Brønsted–Lowry definition of acids identify that made it a significant improvement over earlier definitions? (A) Acids contain hydrogen - HSC - SSCE Chemistry - Question 7 - 2002 - Paper 1
Step 1
B) Acids are proton donors.
Answer
The Brønsted–Lowry theory of acids and bases fundamentally expanded our understanding of these substances compared to earlier definitions.
Earlier definitions, such as the Arrhenius definition, restricted acids to substances that release hydrogen ions (H+) in water. However, the Brønsted–Lowry definition defines acids more broadly: they are substances that donate protons (H+) in a chemical reaction. This understanding recognizes that acids can act in a variety of solvents, not just water, and greatly enhances the conceptual framework for acid-base chemistry.
This definition is significant as it allows for a more inclusive understanding of acid behavior across different chemical environments, which was not captured in previous definitions.