JAMB - Chemistry (2003 - No. 14)
Which of the following ions is acidic?
K+
KNO3-
S2-
H3O+
Explanation
Acids are substances which produces hydrogen ions (or protons) as the only positive ion when dissolved in water.
\(H_{3}O^{+} \to 2H^{+} + OH^{-}\)
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