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Example Questions
Example Question #3 : Definitions Of Acids And Bases
According to the Lewis definition, acids are __________.
electron pair acceptors
electron pair donors
hydrogen acceptors
hydrogen donors
hydroxide acceptors
electron pair acceptors
According to the Lewis definition, acids are electron pair acceptors.
Example Question #1 : Acids And Bases
What is the Lewis definition of bases?
accept hydrogen ions
electron pair donors
increase the concentration of hydrogen ions in a solution
increase the concentration of hydroxide ions in a solution
electron pair acceptors
electron pair donors
According to the Lewis definition, bases are electron pair donors.
Example Question #1 : Acid Base Chemistry
What does amphoteric mean?
substance is highly basic
A substance cannot act as an acid or a base
substance has a high concentration of neutrons
A substance that is highly acidic
A substance can act either as an acid or a base
A substance can act either as an acid or a base
An amphoteric substance is one that can act either as an acid or a base. Amino acids are good examples of amphoteric substances; they have a carboxylic acid group that can be acidic, and an amino group that can be basic.
Example Question #1 : Acid Base Chemistry
What is a diprotic acid?
A really weak base
An acid with 3 ionizable hydrogens
A really strong base
An acid with 2 ionizable hydrogens
An acid with 1 ionizable hydrogen
An acid with 2 ionizable hydrogens
Acids have hydrogen ions and balanced charges, "di" tells us that the acid in question has two potential hydrogen ions, which can be ionized and turned into protons (protic). These acids, like can ionize once, yielding
then again, yielding
.
Example Question #11 : Acids And Bases
What is a triprotic acid?
An acid that donates an electron pair
An acid with three ionizable hydrogens
An acid with one ionizable hydrogen
An acid that accepts an electron pair
An acid with two ionizable hydrogens
An acid with three ionizable hydrogens
Acids have hydrogen ions and balanced charges. "Tri" tells us that the acid has three potential hydrogen ions. Once ionized, a hydrogen turns into a proton, hence, protic. An example of a triprotic acid is phosphoric acid
Example Question #11 : Acids And Bases
What is a monoprotic acid?
A really weak base
An acid with three ionizable hydrogens
An acid with one ionizable hydrogen
Any acid with more than 2 ionizable hydrogens
An acid with two ionizable hydrogens
An acid with one ionizable hydrogen
Acids have hydrogens that can dissociate into solution. In this case, the word "mono" tells us that there is only one potential hydrogen ion in that acid; so only one hydrogen ion can be ionized from that acid. A diprotic acid, such as has two ionizable hydrogens.
Example Question #413 : High School Chemistry
What is a polyprotic acid?
An acid with two ionizable hydrogens
Any acid with more than two ionizable hydrogens
An acid with three ionizable hydrogens
An acid that increases the concentration of hydrogen ions in a solution
An acid with one ionizable hydrogen
Any acid with more than two ionizable hydrogens
By definition, a polyprotic acid is one that has more than two ionizable hydrogens.
Example Question #11 : Acids And Bases
Which of the following substances are amphoteric?
Remember: amphoteric means that the substance can act as either an acid or a base. Using the Bronsted-Lowry definition of acids and bases (acids donate hydrogens and bases accept hydrogens) we find that is the only compound that can give up a hydrogen (and be left with
), or accept a hydrogen (and become
).
Example Question #13 : Acids And Bases
According to the Arrhenius definition __________.
acids are hydroxide donors
acids increase the concentration of hydroxide ions in a solution
acids accept electron pairs
bases accept electron pairs
bases increase the concentration of hydroxide ions in a solution
bases increase the concentration of hydroxide ions in a solution
According to the Arrhenius definition, bases increase the concentration of hydroxide ions in a solution.
Example Question #11 : Acids And Bases
According to the Arrhenius definition, acids __________.
Acids increase the concentration of hydrogen ions in a solution
Acids are proton acceptors
Acids are hydrogen donors
Acids are hydroxide donors
Acids increase the concentration of hydroxide ions in a solution
Acids increase the concentration of hydrogen ions in a solution
According to the Arrhenius definition, acids increase the concentration of hydrogen ions in a solution.
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