Which of the following is the conjugate base of the following acid? (Note: electron pairs are not shown) SH 3 SH₂ Select one: O A. II OB. I O C. IV O D. III || SH₂ III SH₂ IV OH

Nicole and Patrick test the pH of four common kitchen substances and record the pH values in the table below. pH OF KITCHEN SUBSTANCES Substance pH Value Q 5 S 12 Which statement best compares Substance I to the other tested substances? A.O Substance T has the greatest concentration of H* ions. В. Substance T has the lowest H3O+ concentration in solution. C. Substance dissolves the fewest compounds. D.O Substance T contributes the most protons to water.

a. A solution of HNO3 has a pH of 3.69. What is the molarity of the solution? Molarity |M b. A solution of HNO3 has a pH of 4.34. What is the molarity of the solution? Molarity M c. A solution of HNO3 has a pH of 2.22. What is the molarity of the solution? Molarity M

Water (H,O) acts as a Brønsted-Lowry base in which of the following equilibrium reactions? I. HCO, + H,O= H,CO, + OH- II. HSO, + H,O*= H,0 + H,SO, III. NH, + H,O = H,O* + NH3 I a. I only b. Il only C. Il and III d. I and IIII

46 plz

3. Which of the following should produce the lowest pH when dissoived in water (assuming equal concentrations dissolved)? A. HCIO B. LIOH C. HC;H,O, D. HОCN

Which aqueous solution has the highest pH? О 0.55 М Ba(ОН)2 O 1.0 M HCN О 1.4 МСН3СОН O 1.2 M NaHSO4

For the reaction: HPO, (aq) + H,O (€) = H¿PO, (aq) + OH" (aq) Use figure 16.4 to predict if equilibrium lies to the left or to the right. If the pOH is 10.5 calculate the [OH] and [H;O*]

What are the major species present in 0.250 M solutions of each of the following acids? Calculate the pH of each of these solutions.a. HOC6 H5b. HCN

a. A solution of HINO, has a pH of 3.57. What is the molarity of the solution? Molarity = M b. A solution of HNO3 has a pH of 4.11. What is the molarity of the solution? Molarity = M c. A solution of HNO3 has a pH of 1.83. What is the molarity of the solution? Molarity M