A 0.1 M solution of which salt is the most basic
The most basic salt is one that contains the conjugate base of a strong acid. Strong bases fully dissociate in water, so a salt containing the conjugate base of a strong base will also fully dissociate and produce hydroxide ions (OH-) in solution, making the solution more basic.
Examples of strong bases include sodium hydroxide (NaOH), potassium hydroxide (KOH), and calcium hydroxide (Ca(OH)2). Therefore, salts such as sodium acetate (NaCH3COO), potassium carbonate (K2CO3), and calcium chloride (CaCl2) would produce the most basic solutions when dissolved in water.
To determine which of these salts would be the most basic, it would be necessary to compare the pKb (negative logarithm of the base dissociation constant) values for the conjugate bases. A higher pKb value indicates a stronger base, so the salt with the highest pKb value would be the most basic.