Final answer:
The balanced equation for the reaction between sodium hydroxide and potassium hydrogen phthalate is NaOH + KHP → NaKP + H2O. This equation represents a neutralization reaction where NaOH reacts with KHP to form NaKP (salt) and water.
Step-by-step explanation:
The balanced equation for the reaction between sodium hydroxide (NaOH) and potassium hydrogen phthalate (KHP) is given by option A) NaOH + KHP → NaKP + H2O. This equation represents the neutralization reaction, where NaOH reacts with KHP to form NaKP (salt) and water (H2O).