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life chemistry is based on ____
water
cells contain ____ water
80-90%
TRUE or FALSE
Proper pH is essential to
some
living systems
True
False
FALSE - all
TRUE or FALSE
Maintaining proper pH is
critical
to survival of cells and biological systems
True
False
TRUE
It is a substance that breaks into [H+] ions in an aqueous solution
Acid
It is a substance that breaks into [OH-] ions in an aqueous solution
Base
TRUE or FALSE
Aqueous solution is any solution where H2O is the
solute
True
False
FALSE - solvent
Citric or Vinegar is an example of?
Acid
Give some examples of common acids
1) Citric Acid
2) Vinegar (acetic/ethanoic acid)
It has sour taste
Acid
One characteristic of acid is?
It taste sour
This may burn your skin
Acid
This turns the pH paper meter(litmus paper) into red
Acid
Other Examples of acids are HCl and H2SO4 read as?
1) Hydrochloric Acid
2) Sulfuric Acid
Soap, Ammonia and bleach are common ___
Bases
Give some common bases
1) Soap
2) Ammonia
This has a bitter taste
Base
It can be poisonous and corrosive
Base
It feels slippery
Base
This can turn the litmus paper into blue
Base
NaOH, KOH, NH3 read as _____ are other examples of bases
Sodium Hydroxide, Potassium Hydroxide and Ammonia
Three Definitions of Acids and Bases
1) Svante Arrhenius
2)Bronsted-Lowry
3) Gilbert Lewis
Whose definitions states that an
acid
is a substance that when dissolved in water produces or increases the concentration of
hydrogen
ions
Svante Arrhenius definiton
Whose definitions states that a
base
is a substance that when dissolved in water produces or increases the concentration of
hydroxide
ions
Svante Arrhenius definition
In Arrhenius definition it states that an _____is a substance that when dissolved in water produces or increases the concentration of hydrogen ions
Acid
In Arrhenius definition it states that a base is a substance that when dissolved in water produces or increases the concentration of _____ ions
hydroxide
Their concept is based on the fact that acid-base reactions involve the transfer of H+ ions from one substance to another.
Johannes Bronsted and
Thomas Lowry
Whose definition states that an
acid
is a proton (H+)
donor
?
Bronsted-Lowry definition
Whose definition states that a
base
is a proton (H+)
acceptor
?
Bronsted-Lowry definition
In Bronsted-Lowry definition it states that an acid is a proton (H+) ____.
Donor
In Bronsted-Lowry definition it states that a ____ is a proton (H+) acceptor.
base
In Bronsted-Lowry ___ must have one ____ proton to donate
acid ------ removable
In Bronsted-Lowry base must have one ____ to accept a proton
nonbonding pair of electrons
The emphasis of Bronsted-Lowry concept is on _____
proton transfer
TRUE or FALSE
The emphasis of Bronsted-Lowry concept is on proton transfer, it also applies to reactions that
do not occur in aqueous solution.
True
False
TRUE
Whose definition states that an acid accepts a pair of electrons?
Lewis definition
Whose definition states that a base donates a pair of electrons?
Lewis definition
In Lewis definition, ____ are electron pair acceptors
acids
In Lewis definition, a base are electron pair ___
donors
This definition is a more general definition than the the other definitions.
Gilbert Lewis definition
MEMORIZE
1) Acid - [H+] producer
2) Base - [OH-] producer
1) Acids - Proton (H+) donor
2) Base - Electron pair donor
It is a substance capable of acting as either an acid or a base and can also donate or accept a proton
Amphiprotic
TRUE or FALSE
Water is an example of
Amphiprotic and Amphoteric
True
False
TRUE
It is the particle formed that has received the proton.
Conjugate Acids
It is the particle ;eft from the acid once it has donated the proton.
Conjugate base
A substance that can act as either an acid or base.
Amphoteric
An acid that has lots of water and small amount of acid
Dilute acid
An acid that has lots of acid and not much water
concentrated acid
An acid that releases lots of proton (H+)
Strong acid
An acid that releases fewer proton (H+)
weak acid
It is the extent to which a compound is acidic or basic and is measured by the _____
pH scale
In measuring acid strength, an indicator is needed. What are some examples of indicators?
1) Litmus paper
2)Universal Indicator
It measures how acidic or basic a solution is
pH scale
Acids have a pH from ____
0-7
Bases have a pH from ____
7-14
___ pH value indicates a stronger acid
lower
Higher pH value indicates what?
strong base
It is a solution that resists changes in pH when small amounts of acids and bases are added
BUFFER
TRUE or FALSE
STRONG acids and STRONG bases completely dissociate in water and they
create
an equilibrium system
True
False
FALSE - DO NOT CREATE
TRUE or FALSE
WEAK acids and WEAK bases dissociate to a far LESSER degree and they
create
an equilibrium system
True
False
TRUE
An acid or base that differ only in the presence or absence of a proton are called
conjugate acid-base pair
two formulas that differ by proton (H+) are called
conjugate acid-base pair
it is a method of reporting hydrogen ion concentration
pH
pH = -log[H+]
formula
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Author
eayilat_alghabat
ID
341686
Card Set
Acids and Buffers
Description
buffers
Updated
2018-08-08T17:38:44Z
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