How do you calculate pH of KCl and CaCl2?

To calculate the pH of KCl or CaCl2, you need to first consider the dissociation of the salt in water. KCl dissociates into K+ and Cl- ions, while CaCl2 dissociates into Ca2+ and 2Cl- ions. Next, calculate the concentration of each ion using the molarity of the salt solution. Finally, use these ion concentrations to calculate the pH using the relevant equilibrium equation, such as the self-ionization of water for K+ and Cl- ions, or the hydrolysis of water for Ca2+ ions.