Which of the following compounds is a Bronsted-Lowry base? H_3PO_4 NH_4^+ HCl HP

Question

Which of the following compounds is a Bronsted-Lowry base? H_3PO_4 NH_4^+ HCl HPO_4^2- Which of the following is not a conjugate acid/base pair? HS^- and H_2S HCO_3^-/CO_3^2- NH_4^+/NH_3 HNO_3/HNO_2 Consider the equilibrium. Which are the Bronsted-Lowry bases? PO_4^3+ + H_2O irreversible HPO_4^2- + OH^- H_2O and OH^- H_2O and HPO_4^2- PO_4^3- and HPO_4^2- PO_4^3- and OH^- A 0.010 M solution of a monoprotic weak acid HA has a pH of 3.00. What is the pK_a of this acid? 6.00 5.00 4.00 3.00 For the following equilibrium reactions: HA irreversible H^+ + A^- K_a = 1.8 times 10^-4 A^- + H_2O irreversible HA + OH^- K_b = ? How would you calculate K_b form K_a? (K_w = 1.0 times 10^-14) K_b = K_w - K_a K_b = K_a/K_w K_b = K_a times K_w K_b = K_w/K_a What is the pH of an 1.00 M weak acid solution (HA, pK_a = 6.00)? 5.00 4.00 2.00 1.00 Which one of the following salts forms solutions with pH > 7 when dissolves in water? NaF NaCl NaBr Nal

Explanation / Answer

Solution:

Answer is option D.HPO42-

Bronsted lowry base is the any chemical species which acceptons protons that is H+ ion. Therefore, This is called HPO4- is the bronsted base.

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