Answer:
c. dissociation
Step-by-step explanation:
Dissociation is a chemical reaction in which a molecule or ionic compound separates into simpler components. For example, the salt NaCl dissociates into Na+ and Cl- ions in water. This is represented by the formula NaCl (s)→ Na+ (aq) + Cl- (aq), which can be generalized into the formula in the question: MX (s) → M (aq) + X (aq). MX represents an ionic salt, in which M is a metal and X is a nonmetal. The aq shows that the products are formed in an aqueous solution.
Ionization is a process in which a neutral atom or molecule loses or gains an electron to form a charged ion (either a cation or anion). A general way to express ionization is M → M+ + e-, though ions may ionize further.
A titration is a common technique used to quantitatively determine the concentration of an unknown solution. It involves gradually adding a solution with known concentration (called the titrant) into a solution with unknown concentration (called the analyte) until we reach a point called the equivalence point.
Based on the definitions of each process, we can conclude that the process represented in the figure MX (s) → M (aq) + X (aq) is dissociation.