Transcribed Image Text: Refer to the table below to answer the succeeding questions:

Transcribed Image Text: Refer to the table below to answer the succeeding questions:
Weak acids
pK, pK, pK,
Acetic acid
4.74
Carbonic acid
6.10 10,4
Phosphoric acid
1.97 7.00
12.5
Citric acid
3.10 4.10
6.40
A 1.0-L 0.010 M buffer with pH 6.50 is given as an
assignment to a group of students. Which is the most
appropriate weak acid to be used in the buffer preparation?
A. Citric Acid
B. Acetic Acid
C. Carbonic Acid
D. Phosphoric Acid
What is the concentration of the weak acid and its
conjugate base, respectively?
O 0.0240 M and 0.0760 M
O 0.0285 M and 0.0715 M
O 0.0443 M and 0.0557 M
O 1.708 x 10-3 M and 0.0983 M
What is the mass of the conjugate base component given
the following molecular weights of the solid reagents: weak
acid = 236.09 g/mol, conjugate base = 258.06 g/mol?
19.61 g
O 14.37 g
O 25.37 g
O 18.45 g
What is the mass of the weak acid component given the
following molecular weights of the solid reagents: weak acid
= 236.09 g/mol, conjugate base = 258.06 g/mol?
O 5.67 g
O 6.73 g
O 10.46 g
O 0.40 g

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