Suppose 50.0 mL of a 0.100 M solution of the weak acid HA is titrated with a 0.100 M solution of NaOH. Which diagram best represents the equilibrium composition of the solution at point X on the titration curve below? (Solvent water molecules are omitted for clarity.) 
Definitions:
Reflexes
Automatic, involuntary responses to specific stimuli, designed to protect the body and maintain homeostasis without conscious effort.
Nipple
A small projection of skin on the breast through which, in females, milk is delivered to a mother’s young.
Food
Substances consumed to provide nutritional support for the body, primarily consisting of plant, animal, or fungal origin.
Reflex
A simple, automatic response to a sensory stimulus, such as the knee-jerk response.
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