Answer to Question #65849 in Physical Chemistry for umar

Question #65849
Question 19 : Which of the following mixtures produces a buffer solution?
0.300 M
K
N
O
3
KNO3
+ 0.100 M NaCl (50 mL each)
0.400 M
C
H
3
C
O
O
H
CH3COOH
+ 0.100 M
C
H
3
C
O
O
N
a
CH3COONa
(50 mL each)
0.300 M
N
H
4
C
l
NH4Cl
+ 0.100 M HCl (50 mL each)
0.300 M NaOH + 0.100 M HCl (50 mL each)

Question 20 : The common-ion effect
promotes evaporation.
promotes condensation
reduces ionization.
increases solubility
1
Expert's answer
2017-03-03T17:57:54-0500
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