_ Acids and Bases Guided Notes 5a: Properties of acids and bases What are properties of acids and bases o Every acid and every base is an _____________ in an aqueous solution o Acids react with ___________ to release __________ gas o An acid is an element with a ______________ ion (ex: HCl, HNO3, H2SO4) o A base contains an ____ ion. How do acids and bases generate electricity? o Acid + ______ _______ + Water o When you dissolve an _______ compound in a solution, it breaks apart into its ____________. These ionic compounds (salt) make it possible to generate __________. What happens when an acid and base react? What is produced? o Acids __________ (give) a H+ to solution o Bases __________ (take) a H+ from the solution 5b: Chemical reaction equations using Acids and Bases What do acids and bases do in chemical reactions? o An acid is a substance that _____________ up a hydrogen ion to another substance o Water can act as an acid since it sometimes gives up a _______________ (H+) ion o A base is a substance that ________________ a hydrogen ion from another substance o Acids react with the base to form water and the ________________ base How do you know which reactant acts as an acid and which acts as a base? And what is the conjugate acid and conjugate base? 5c. Properties of strong acids/bases _ What makes something a strong acid/base o A strong base ___________ releases __________ ions o A strong acid/base ___________________________ when dissolved in water o A weak acid/base _____________ dissociates in water o An example of a ____________ acid is ______________ acid because it completely dissociates o An example of a ____________ acid is _____________ acid because it partially dissociates o An example of a _____________ base is NaOH because it completely dissociates o An example of a __________ base is _________ because it partially dissociates 5d. pH scale What is the pH scale and what is considered basic and acidic on the scale? o The pH scale measures the __________________ of H+ (hydrogen ions) in a solution. The scale runs from 0-14. An __________ has a pH of 0-7, with 0 being the strongest acid and 7 being the weakest acid. A ___________ has a pH of 7-14, with 14 being the strongest and 7 being the weakest. What factors is the pH scale measured by? o Increments of 10s How do you find hydronium/hydroxide ion concentration? o When the concentration of hydronium ions increases, the concentration of hydroxide ions decreases o Example: pH: Hydronium [H3O+] Hydroxide [OH-] pOH: 1 2 3 4 10-1 ______ 10-3 10-4 _______ 10-12 10-11 _______ 13 12 _____ 10 How do you calculate these? pH = -log [H3O+] pH + _______ = 14