Determine the pH of each solution.
Dissociation Constants at 25 ∘C
Name
Formula
Ka
Formic acid
HCHO2
1.8×10−4
Name
Formula
Kb
Methylamine
CH3NH2
4.4×10−4
a) 0.21 M KCHO2
b) 0.21...
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Chemistry
Determine the pH of each solution.
Dissociation Constants at 25 ∘C
Name
Formula
Ka
Formic acid
HCHO2
1.8×10−4
Name
Formula
Kb
Methylamine
CH3NH2
4.4×10−4
a) 0.21 M KCHO2
b) 0.21 M CH3NH3I
c)0.21 M KI
Answer & Explanation
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4.4 Ratings (929 Votes)
a 021 M KCHO2 KCHO2 Kaq CH2Oaq expect hydrolysis CH2Oaq H2Ol CH2OH OHaq Let HA CH2OH and A CH2O for simplicity since A is formed the next equilibrium is formed the conjugate acid and water A H2O HA OH The equilibrium s best described by Kb the base constant Kb by definition
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