A question regarding the definition of acids and bases

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Discussion Overview

The discussion revolves around the definitions of acids and bases, particularly focusing on the implications of these definitions in different contexts. Participants explore whether substances that have not yet dissociated in water can still be classified as acids or bases based on their definitions.

Discussion Character

  • Conceptual clarification
  • Debate/contested

Main Points Raised

  • One participant cites a definition from an inorganic chemistry book stating that acids produce H+ ions and bases produce OH- in dilute aqueous solutions, questioning if this allows for substances like pure HCl gas and NaOH pellets to be classified as acids and bases before they dissolve.
  • Another participant agrees with the initial interpretation but notes that definitions of acids and bases can vary depending on context, suggesting that there may be differing opinions among teachers or scientists.
  • A third participant encourages looking up various definitions of acids, including Lewis, Arrhenius, and Bronsted-Lowry, implying that these frameworks might provide additional insights or perspectives.

Areas of Agreement / Disagreement

Participants generally acknowledge that definitions of acids and bases can vary, indicating that there is no consensus on the implications of the definitions discussed.

Contextual Notes

The discussion highlights the dependence on definitions and the potential for varying interpretations based on different theoretical frameworks.

Dong Aleta
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Hi!

I just read in an inorganic chemistry book (by Whitten, et al.) that acids are defined as substances that produce H+ ions in dilute aqueous solutions, and bases are those that produce OH-. To me, this definition implies that a substance that has yet to produce an H+ or an OH- can already be called an acid or base, respectively. Meaning, pure HCl gas that is yet to be bubbled in water can already be called an acid, and a pure NaOH pellet that is yet to be dissolved in water can already be called a base.

Is this correct? Thanks!
 
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Dong Aleta said:
Hi!

I just read in an inorganic chemistry book (by Whitten, et al.) that acids are defined as substances that produce H+ ions in dilute aqueous solutions, and bases are those that produce OH-. To me, this definition implies that a substance that has yet to produce an H+ or an OH- can already be called an acid or base, respectively. Meaning, pure HCl gas that is yet to be bubbled in water can already be called an acid, and a pure NaOH pellet that is yet to be dissolved in water can already be called a base.

Is this correct? Thanks!

Is is correct in the sense of the definition you gave, but definitions of acids and bases can vary with context, and another teacher or scientist might disagree.
 
Dr. Courtney said:
Is is correct in the sense of the definition you gave, but definitions of acids and bases can vary with context, and another teacher or scientist might disagree.
I see! I was just curious about this one. But thanks so much for the answer!
 
Look up the basic definitions of acids; Lewis, Arrhenius and Bronsted-Lowry.
 

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