In a buffer system of HF and its salt, NaF, ________.
A) the HF neutralizes added acid
B) the HF neutralizes added base
C) the HF is not necessary
D) the F- neutralizes added H2O
E) the F- neutralizes added base - ANS ✓B: the HF neutralizes added base
The function of a buffer is to ________.
A) change color at the end point of a titration
B) maintain the pH of a solution
CHEM 120
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CHEM
C) be a strong base
D) maintain a neutral pH
E) act as a strong acid - ANS ✓B) maintain the pH of a solution
What is a buffer solution? What are the two major components of a buffer? -
ANS ✓A buffer solution maintains the pH by neutralizing added acid and base.
The two major components of a buffer include a weak acid and the salt of the
conjugate base.
According to the Arrhenius concept, if were dissolved in water, it would act
as ________.
A) a base
B) an acid
C) a source of hydroxide ions
D) a source of H-ions
E) a proton acceptor - ANS ✓B) an acid
A solution of hydrobromic acid,HBr, could have a pH thatis ________.
A) 1.0
B) 8.0
C) 10.0
D) 12.5
E) 14.0 - ANS ✓A) 1.0
CHEM 120
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