The table below shows the measured pH of three salt solutions. Identify any cations or anions that affect the pH of the solution. If a cation or anion affects the pH of the solution, write a balanced equation showing the reaction of that cation/anion with water **Table 1: Salt Formula and Measured pH of the Solution**| **Formula** | **pH** ||-------------|--------|| KNO₃ | 6.99 || Na₂HPO₄ | 9.21 || NH₄Br | 5.25 |This table presents the pH levels of solutions for different salts. The salts are listed under the "Formula" column, while their corresponding pH values are in the "pH" column. The pH values indicate the acidity or alkalinity of the solutions: KNO₃ (6.99), Na₂HPO₄ (9.21), and NH₄Br (5.25).

Understanding the impact of salt solutions on pH is fundamental to comprehending the behavior of ions in aqueous environments. The pH of a solution is a measure of its acidity or alkalinity, primarily influenced by the concentration of hydrogen ions (H+) or hydroxide ions (OH-). Salts, composed of cations and anions, can undergo hydrolysis reactions with water, influencing the pH of the resulting solution.To identify cations or anions that affect the pH of the solution, we can consider the behavior of these ions in water and their potential reactions with water.1. KNO3 (Potassium Nitrate):This salt is composed of the potassium cation (K+) and the nitrate anion (NO3-).Neither K+ nor NO3- reacts significantly with water to affect pH.No specific reaction affects pH.2. Na2HPO4 (Sodium Hydrogen Phosphate):This salt contains the sodium cation (Na+) and the hydrogen phosphate anion (HPO42-).The hydrogen phosphate ion can act as a weak base, reacting with water to produce hydroxide ions (OH-): This reaction increases the concentration of hydroxide ions, leading to an alkaline (higher) pH.3. NH4Br (Ammonium Bromide):This salt consists of the ammonium cation (NH4+) and the bromide anion (Br⁻).The ammonium ion can undergo hydrolysis in water, resulting in the formation of hydronium ions (H3O+) and decreasing the pH: This reaction increases the concentration of hydronium ions, leading to an acidic (lower) pH.In summary:Na2HPO4 increases the pH due to the hydrolysis of the hydrogen phosphate ion.NH4Br decreases the pH due to the hydrolysis of the ammonium ion.The other salt, KNO3 , does not significantly affect the pH as neither the potassium ion nor the nitrate ion undergoes significant hydrolysis in water.