The phosphoric acid salt of caffeine has the structure
This molecule behaves as an acid in that it can donate a hydrogen ion, created from the hydrogen atom bonded to the positively charged nitrogen atom. What salt is formed when 1 mole of this salt reacts with 1 mole of sodium hydroxide, NaOH, a strong base?
A. Na+H2PO4-
B. Na2+HPO42-
C. Salts can't react to form salts, rather they only arise from the reaction of an acid and a base.
D. H3O+H2PO4-
Answer: A
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