Vocabulary Flashcards
Arrhenius Acid
Hydrogen ions H +
Arrhenius Base
Hydroxide ions OH-
Bronsted Acid
Hydrogen Containing substance donates a proton(H+)
Bronsted Base
Capable of accepting a proton time
Conjugate Base
Species remaining when a Bronsted donates a proton
Conjugate acid-Base Pair
Bronsted acid(HNO2) and it’s conjugate base (NO2-)
Self ionization of water
Contains H2O molecules and small but equal amounts of H3O+ and OH- ions
Water
Behaves as an acid and a base self in auto ionization. 1.0x10-7 concentration in 1 liter.
Acidic solution
Concentration of H30+ is greater than the concentration of OH-
ph less than 7
Basic or alkaline solution
Concentration of OH- is greater than the concentration of H3O+
ph is greater than 7
ph Formula
-log[H+] or [H+]=1x10-ph
Cation
Positively charged ion
Anion
Negatively charged ion
Salts
Compounds I have at least one ionic bond
Strong acid and strong bases
Acids and bases that dissociates(ionize) completely when dissolved to form a solution
Weak(Moderately weak) Acids and bases
Acids and bases that dissociate (ionize) less than completely when dissolved to form a solution.
Buffers
Solutions that resist changes in pH
Mixture of an acid and a salt of an acid.
Buffer Capacity
The amount of acid(H+) or base(OH-) that can be absorbed by a buffer without causing a significant change in pH.
Molarity
The number of moles of solute per liter of solvent
Molarity formula
M= moles of solute
Liters of solution
Osmole
Unit of measurement that describes the number of moles of a compound that contribute to the osmotic pressure of a chemical solution
Osmolarity
Osmoles of solute per liter of solvent
Tonicity
Compare osmolarity of two solutions separated by a semi permeable membrane
Isotonic
Solution has the same osmolarity compare to the solution on the other side of the membrane
Hypertonic
Solution has a higher osmolarity compared the solution on the other side of the membrane
Hypotonic
Solution has a lower osmolarity compared to the solution on the other side of the membrane
Neutral
A term used to describe any water solution in which the concentrations of H3O+ and OH− are equal. Also, a water solution with pH = 7.
ion-product-of-water
The equilibrium constant for the dissociation of pure water into H3O+ and OH−.
ph
The negative logarithm of the molar concentration of H+ (H3O+) in a solution.
salt
A solid crystalline ionic compound at room temperature that contains the cation of a base and the anion of an acid.
hydrate
A salt that contains specific numbers of water molecules as part of the solid crystalline structure.
water-of-hydration
Water retained as part of the solid crystalline structure of some salts.
equivalent-of-salt
The amount that will produce 1 mol of positive (or negative) electrical charges when dissolved and dissociated.
pka
The negative logarithm of Ka.
henderson–hasselbalch-equation
A relationship between the pH of a buffer, pKa, and the concentrations of acid and salt in the buffer.