Conjugate Acids and Bases Give the formula for each of the requested conjugates:
ID: 1090460 • Letter: C
Question
Conjugate Acids and Bases Give the formula for each of the requested conjugates: The conjugate base for hydrogen phosphate The conjugate acid for the cyanide ion Help chemPad Help Greek Greek 0/0.3 points 1 Previous Answers GVSUChem116v2 14.c.3.P004 Conjugate Acids and Bases Using the table of K, values provided, answer the following questions. Acid Ka 3.5 X 104 2.3 X 1011 4.9 × 10-10 1.8 x 10 Give the name of the weakest acid in the table. HF (hydrofluoric acid) Answer Is not case sensitive. HIO (hypoiodous acid) What is the value of Kp for the conjugate base of this acid? HCN (hydrocyanic acid) CH3COOH (acetic acid)Explanation / Answer
Hydrogen phosphate (HPO4-2) : PO4-3 is the conjugate base (conjugate base is obtained by removing a proton)
cyanide ion (CN-) : HCN is the conjugate acid (conjugate acid is obtained by adding a proton)
Weakest acid : HIO (hypoiodous acid). Lower the Ka value, weaker is the acid.
Kb value of the conjugate base (IO-) of HIO is = 1.0 x 10-14 / 2.3 x 10-11 = 4.3 x 10-4
Ka x Kb = Kw = 1.0 x 10-14 , Kw is the ionic product of water