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WorksheetsIonic equilibrium
Total questions: 22
Worksheet time: 11mins
In the ionized form, aqueous solubility ________ while lipid solubility _________ and permeability _______
Decreases, increases, is non permeable
Increases, decreases, is non permeable
increases, decreases, increases
Decreases, decreases, increases
In the un-ionized form, aqueous solubility ________ while lipid solubility _________ and permeability
Decreases, increases, is non-permeable
Increases, decreases, increases
Increases, increases, is non-permeable
Decreases, increases, increases
T/F the ionization of a strong electrolyte depends on the pH and the strength of the ionizable functional group.
True
False
Substances that ionize to cations and anions in aqueous solutions are called _______?
Solutes
Electrolytes
Non-electrolytes
_______ are substances that completely ionize in aqueous solution and are pH independent.
Weak electrolytes
Strong electrolytes
Non-electrolytes
_________ are substances that ionize partially in aqueous solutions at most concentrations and ionize completely at infinite dilutions. (pH dependent)
Weak electrolytes
Strong electrolytes
Non electrolytes
Which of the following are solvents that are capable of accepting a proton?
Aprotic
Protogenic
Protophilic
Amphiprotic
Which of the following solvents are able to act as both proton acceptor and proton donors?
Protogenic
Amphiprotic
Aprotic
Protophilic
Which of the following solvents are proton donating solvents?
Aprotic
Amphiprotic
Protophilic
Protogenic
Which of the following solvents are neither proton accepting or donating and are neutral?
Amphiprotic
Protogenic
Aprotic
Protophilic
According to the Lewis acid-base concept:
Species in which the central atom has completed an octet cannot act as an acid.
Negatively charged ions are acids
Molecule in which the central atom has vacant d-orbitals available acts as an acid.
All positively charged ions act as a base
According to the Lewis concept, an acid is a/an:
Proton donor
Electron pair donor
Proton acceptor
electron pair acceptor
According to Bronsted-Lowry concept, an acid is a substance which is
A proton donor
A proton acceptor
An electron pair acceptor
An electron pair donor
Ionic theory of acid and base was proposed by :
Lowry
Bronsted
Lewis
Arrhenius
According to Bronsted concept, base is a substance which is:
A proton donor
An electron pair acceptor
A proton acceptor
An electron pair donor
The theory that acids yield H+ ions and bases yield OH- ions in water was proposed by
Bronsted and Lowry
Lewis
Arrhenius
In the rxn HA -> (H+) + (A-), A- is the
Weak acid
Conjugate base
Weak base
Conjugate acid
When pH decreases, hydrogen ion concentration ___________.
Decreases
Stays the same
Increases
At a pH of 7, the hydrogen and hydroxyl concentrations are
Vastly different from each other
Exactly the same (neutrality)
Close to each other
A weak acid will have a:
Weak conjugate base
Strong conjugate acid
Weak conjugate acid
Strong conjugate base
If the Ka is high, the pKa is _______ and the weak acid is________.
High, stronger
Low, stronger
High, weaker
Low, weaker
A strong base has:
High pKa
Low Ka
High Kb
Low pKb
