Bronsted-LoWey Definition Acid Compound that can increase the hydrogen ion(Ht) concentration when dissolved in water e.g. HCI(ag)+ H2O()H3O+(ag)+ Cl(aq) e.g. HCN(aq)+ H20 ()>H3O+(aq)+ CN(aq) Base Compound that can increase the hydroxide ion(OH-) concentration when dissolved in water g NaoH(aq)> Na(ag)+ OH (ag) e.g. NH3(aq)+ H2o()NH4(aq)+ OH(aq)Brønsted-Lowe y Definition z Acid „ Compound that can increase the hydrogen ion (H +) concentration when dissolved in water concentration when dissolved in water. ¾ e.g. HCl (aq) + H 2O (l) Æ H 3 O + (aq) + Cl- (aq), ¾ e g HCN (aq) + H2O (l) Æ H O + (aq) + CN- ¾ e.g. HCN (aq ) + H2O (l) Æ H (aq ) 3 O (aq ) + CN (aq ) z Base „ Compound that can increase the hydroxide ion (OH-) concentration when dissolved in water. ¾ e.g. NaOH (aq) Æ Na + (aq) + OH-(aq) ¾ e.g. NH 3 (aq) + H 2O (l) Æ NH 4 + (aq) + OH- (aq) 2