Properties of Acid.

• Acids are proton donor in aqueous solution.
• Acids are molecules having hydrogen atom and capable to release hydrogen ion in aqueous solution.
• Acids may be the molecular species with positive charge or negative charge or may be without charge.
• Conjugate base of an acid is the remaining anionic part of an acid after removal of proton from that acid.
• Strong acid is the acid which rapidly and completely ionizes into H+ and its conjugate base in solution.
• Weak acid the acid which slowly and partially ionizes into hydrogen ion and its conjugate base in solution.
• For strong acid degree of dissociation and dissociation constant is high with low pK value. Conversely for weak acid degree of dissociation and dissociation constant is low with high pK value.
• In case of strong acid the conjugate base shows less affinity to proton because of which they can rapidly and completely ionize to proton. So conjugate bases of strong acids are weak in nature. On the other hand, in case of weak acid the conjugate base shows strong affinity to proton because of which they partially ionize to proton. So conjugate bases of weak acids are strong in nature.