Salts, Acids, and Bases Quiz
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Questions and Answers

Salts that contain the cation of a strong base and an anion that is the conjugate base of a weak acid are?

  • Strong
  • Basic (correct)
  • Acidic
  • Neutral

Salts that contain cations that are the conjugate acid of a weak base and an anion of a strong acid are?

  • Neutral
  • Acidic (correct)
  • Basic
  • Strong

Every anion can potentially act as a base.

False (B)

Is NO3- a weak base or pH-neutral?

<p>pH-neutral</p> Signup and view all the answers

Is NO2- a weak base or pH-neutral?

<p>weak base</p> Signup and view all the answers

Is C2H3O2- a weak base or pH-neutral?

<p>weak base</p> Signup and view all the answers

Some cations can potentially be acidic.

<p>True (A)</p> Signup and view all the answers

Cations of small, highly charged metals are always acidic.

<p>False (B)</p> Signup and view all the answers

Is LiOH a strong or weak base?

<p>Strong (B)</p> Signup and view all the answers

Is NaOH a strong or weak base?

<p>Strong (A)</p> Signup and view all the answers

Is KOH a strong or weak base?

<p>Strong (B)</p> Signup and view all the answers

Is Sr(OH)2 a strong or weak base?

<p>Strong (A)</p> Signup and view all the answers

Is Ca(OH)2 a strong or weak base?

<p>Strong (B)</p> Signup and view all the answers

Is Ba(OH)2 a strong or weak base?

<p>Strong (B)</p> Signup and view all the answers

Is CO3 a strong or weak base?

<p>weak</p> Signup and view all the answers

Is CH3NH2 a strong or weak base?

<p>weak</p> Signup and view all the answers

Is C2H3NH2 a strong or weak base?

<p>weak</p> Signup and view all the answers

Is C5H5N a strong or weak base?

<p>weak</p> Signup and view all the answers

Is HCO3 a strong or weak base?

<p>weak</p> Signup and view all the answers

Is C6H5NH2 a strong or weak base?

<p>weak</p> Signup and view all the answers

Is NO2 acidic, basic, or neutral?

<p>Basic (C)</p> Signup and view all the answers

Is Fe3+ acidic, basic, or neutral?

<p>Acidic (A)</p> Signup and view all the answers

Is NO3- acidic, basic, or neutral?

<p>Neutral (A)</p> Signup and view all the answers

Is ClO- acidic, basic, or neutral?

<p>Basic (C)</p> Signup and view all the answers

Is Ca2+ acidic, basic, or neutral?

<p>Neutral (C)</p> Signup and view all the answers

Is I- acidic, basic, or neutral?

<p>Neutral (C)</p> Signup and view all the answers

Is Na+ acidic, basic, or neutral?

<p>Neutral (B)</p> Signup and view all the answers

Is NH4+ acidic, basic, or neutral?

<p>Acidic (C)</p> Signup and view all the answers

Is NaHCO3 acidic, basic, or neutral?

<p>Basic (C)</p> Signup and view all the answers

Is CH3Ch2NH3Cl acidic, basic, or neutral?

<p>Acidic (B)</p> Signup and view all the answers

Is KNO3 acidic, basic, or neutral?

<p>Neutral (B)</p> Signup and view all the answers

Is Fe(NO3)3 acidic, basic, or neutral?

<p>Acidic (C)</p> Signup and view all the answers

Study Notes

Salts and Acids

  • Salts with strong base cations and conjugate weak acid anions are classified as basic.
  • Salts containing conjugate acids of weak bases and strong acid anions are termed acidic.

Anions as Bases

  • Every anion acts as the conjugate base of an acid, indicating potential as a base, although not all engage in this role.
  • NO3⁻ is pH-neutral, derived from the strong acid HNO3.
  • NO2⁻, as the conjugate base of the weak acid HNO2, functions as a weak base.
  • C2H3O2⁻ is a weak base, originating from the weak acid HC2H3O2.

Cations and Acidity

  • Certain cations can be interpreted as the conjugate acids of weak bases, positioning them as potentially acidic.
  • Cations from small, highly charged metals exhibit weak acidity, while alkali metal and alkaline earth metal cations are considered pH neutral due to hydration.

Classification of Bases

  • LiOH, NaOH, KOH, Sr(OH)2, Ca(OH)2, and Ba(OH)2 are classified as strong bases.
  • CO3, CH3NH2, C2H3NH2, C5H5N, HCO3, and C6H5NH2 are recognized as weak bases.

Acidic, Basic, or Neutral Classifications

  • NO2 is classified as basic.
  • Fe³⁺ is acidic.
  • NO3⁻, Ca²⁺, I⁻, and Na⁺ are neutral.
  • ClO⁻ is categorized as basic.
  • NH4⁺ is classified as acidic.

Salt Classifications

  • NaHCO3 is classified as basic.
  • CH3Ch2NH3Cl is classified as acidic.
  • KNO3 is recognized as neutral.
  • Fe(NO3)3 is categorized as acidic.

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Description

Test your knowledge on the classifications of salts, acids, and bases. This quiz covers the behavior of anions and cations, along with their potential acidity or basicity. Understand the nuances of strong and weak acids and bases through various examples.

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