Question

Write chemical equations for the reactions that occur when solutions of the following substances are mixed:

c. OH- and H₂PO₄-
d. C₅H₅N pyridine, a base) and HC₂H₃O₂ (acetic acid)

Answer 1

#c

$\\ \rm\hookrightarrow H_2PO_4^-+OH-\longrightarrow HPO_4^{2-}+H_2O$

• H_2PO_4 is a base according to bronsted Lowry theory.
• So it loses a H+ and OH- takes that to form water

#2

$\\ \rm\hookrightarrow C_5H_5N+C_2H_4O_2\longrightarrow C_6H_6N^++C_2H_3O_2^-$

• Pyridine is a bronsted base .
• So it forms pyridine cation by taking one H^+ from acetic acid