Which of the following equations best represents the reaction described by the titration curve? A - HSC - SSCE Chemistry - Question 6 - 2019 - Paper 1

A. NH₃(aq) + HCl(aq) → NH₄Cl(aq): This option correctly shows an acid-base reaction, where ammonia (a weak base) reacts with hydrochloric acid (a strong acid).

B. NaOH(aq) + HCl(aq) → NaCl(aq) + H₂O(l): This reaction represents the neutralization of a strong acid with a strong base, generating a salt and water.

C. NH₃(aq) + CH₃COOH(aq) → CH₃COONH₄(aq): This involves a weak acid (acetic acid) and a weak base (ammonia), which can also form a salt but may not represent a typical titration curve as well as option A.

D. NaOH(aq) + CH₃COOH(aq) → CH₃COONa(aq) + H₂O(l): This also represents a neutralization, forming a salt and water from a strong base and a weak acid.

Based on the analysis, option A is the best representation of the reaction described by the titration curve.