Final answer:
Without specific details about the BCl compound, we cannot predict the exact reaction with benzoic acid. However, benzoic acid can react with bases to form salts, and is used in buffer systems, involving calculations of pH using its pKa value of 4.20.
Step-by-step explanation:
When benzoic acid is mixed with a 1.0 M solution of BCl, which presumably stands for a boron chloride compound, there's insufficient contextual chemical information to predict a specific reaction without additional details regarding the BCl compound. Benzoic acid (C₆H₅CO₂H) is only slightly soluble in water and minimally dissociates into benzoate anion (C₆H₅CO₂⁻) and proton (H⁺) as indicated in Figure 14.7.2. However, in the presence of a base, benzoic acid can react to form its salt through a neutralization reaction. For instance, benzoic acid reacts with aqueous sodium hydroxide (NaOH) to produce sodium benzoate and water. With sodium bicarbonate (NaHCO₃), it releases carbon dioxide (CO₂) and water besides forming the sodium benzoate salt.
As part of buffer systems, benzoic acid can be used with sodium benzoate to create a buffer solution, which is evident in various exercises provided. For example, to calculate the pH of a solution containing both benzoic acid and sodium benzoate, one would use the Henderson-Hasselbalch equation. Knowing the pKa of benzoic acid (4.20) allows for these calculations.