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Weak Acid and Base Equilibria

AP Chemistry· difficulty 4/5

A 0.10 M solution of NH4_4Cl will be

  • A

    Strongly acidic

  • B

    Neutral

  • C

    Strongly basic

  • D

    Slightly acidic (NH4+_4^+ is weak acid; Cl−^- is neutral)

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Explanation

NH4+_4^+ is the conjugate acid of weak base NH3_3 — slightly acidic. Cl−^- (conjugate base of strong HCl) is essentially neutral.

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