What makes weak base

Consider HCl aq. HC 2 H 3 O 2 is an example of a weak acid:. If an acid is not listed here, it is a weak acid. All strong bases are OH — compounds. Consider NaCl. The net result? Will it hydrolyze? Because neither ion in NaCl affects the acidity or basicity of the solution, NaCl is an example of a neutral salt. Things change, however, when we consider a salt like NaC 2 H 3 O 2. What about the acetate ion? Does this happen? Yes, it does. Because HC 2 H 3 O 2 is a weak acid.

Any chance a weak acid has to form, it will the same with a weak base. Thus NaC 2 H 3 O 2 solutions are slightly basic, so such a salt is called a basic salt.

There are also salts whose aqueous solutions are slightly acidic. NH 4 Cl is an example. Recall from Section NH 4 Cl is an example of an acid salt. The molecule NH 3 is a weak base, and it will form when it can, just like a weak acid will form when it can. So there are two general rules: 1 If an ion derives from a strong acid or base, it will not affect the acidity of the solution.

Some salts are composed of ions that come from both weak acids and weak bases. The overall effect on an aqueous solution depends on which ion exerts more influence on the overall acidity. We will not consider such salts here.

Search for:. Weak Bases. Learning Objective Solve acid-base equilibrium problems involving weak bases. Bases increase pH; weak bases have a less dramatic effect on pH. Like weak acids, weak bases can be used to make buffer solutions. Show Sources Boundless vets and curates high-quality, openly licensed content from around the Internet. Licenses and Attributions.