CHM110H5 Chapter Notes - Chapter 17: Electronegativity, Protein Structure, Conjugate Acid
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17. 1-common-ion effect in acid-base equilibria: when the concentrations of acid and base in a buffer solution are equal, [h3o+] =ka and ph=pka, when there is more acid than base, [h3o+] > ka and ph < pka. Increasing the concentration of one of the products of a reaction-the common ion- shifts the equilibrium condition in the reverse direction. Solution of weak acids & their salts another in aqueous solution h2o. Acid-base properties of salt solutions: a salt is an ionic compound that is produced when a cation and an anion from an acid-base reaction combine. In other words, the cation from a base replaces a proton on an acid: a simple example is the reaction of the strong base naoh with the strong acid hcl. In solution, the ions react to form h2o, leaving a solution of salt ions, na+and cl-. In this example, the salt ions do not affect the ph of the solution.
