Chemistry 122 d

Question

Identify whether each substance is an acid or base:

HCIO2

NH3

NO2

NaOH

H3PO4

NH4+ (i.e, HNH3)

Write aqueous ionization reactions for two of the substances from the list above.

Answer 1

Identify whether each substance is an acid or base:

HCIO2 -- acid HClO₂ --> ClO₂^- + H⁺

NH3 -- base NH₃ + H⁺--> NH₄⁺

NO2 -- base NO₂^- + H⁺--> HNO₂

NaOH -- base NaOH --> Na⁺ + OH^-

H3PO4 -- acid H₃PO₄ --> H⁺ + H₂PO₄^- Be aware that the H₂PO₄^- can go through two additional ionization steps (H⁺ + H₂PO₄^- --> 2H⁺ + HPO₄^2- --> 3H⁺ + PO₄^3-)

NH4+ (i.e, HNH3) -- acid NH₄⁺ --> NH₃ + H⁺

Hope this helps!