107高醫後西醫第29題,請問(D)KCl為何不行 - 考試

29. A sample of a white solid is known to be NaHCO3, AgNO3, Na2S, or CaBr2.
Which 0.1 M aqueous solution can be used toconfirm the identity of the solid?
(A) NH3(aq) (B) HCl(aq) (C) NaOH(aq) (D) KCl(aq) (E) CH3COOH(aq)

公布答案是(B)

但(C)的KCl也會產生AgCl沉澱啊,
為何不選這答案?請高手解惑

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