Exam 2 Part 2 - Hydrolysis of Salts & Polyprotic Acids

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10 Terms

1
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Are anions associated with conjugate bases or acids?

  • Conjugate bases

2
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Are cations associated with conjugate bases or acids?

  • Conjugate acids

3
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How do you know if an anion is neutral?

  • Neutral: anion is a conjugate base of a strong acid (Cl-, Br-, NO3-, I-, ClO4-)

anions of strong acids

4
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How do you know if an anion is basic?

  • Basic: anion is a conjugate base of a weak acid (everything else)

5
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How do you know if a cation is neutral?

  • Neutral: cation is a conjugate acid of strong base (Grp 1 + OH- and Ba2+, Sr2+, and Ca2+ + OH-)

6
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How do you know if a cation is acidic?

  • Acidic: cation is a conjugate acid of a weak base (everything else, NO H)

7
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What equation can be used to find KA or KB value when given KA and KB?

  • KW=KA x KB

8
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When cation contains an H, what must you do to figure out if it acidic, neutral, or basic?

  • Compare KA and KB values; one at each arrow of dissociation

CHOOSe larger K value

9
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How do you choose which KA and KB values to compare?

  • Choose arrows of KA and KB value only going AWAY from given anion

10
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After comparing, which KA and KB value do you choose?

  • Choose larger one; to determine if anion is acidic or basic