For the reaction shown below, which of the following is a conjugate acid-base pa

Question

For the reaction shown below, which of the following is a conjugate acid-base pair? C_5H_5N(aq) + H_2O(l) = C_5H_5NH^+(aq) + OH^-(aq) C_5H_5N, H_2O C_5H_5N, C_5H_5NH^+ C_5H_5NH^+, OH^- H_2O, OH^- Both B and D Answer () Which the following statements concerning acids and bases is TRUE? All Bronsted-Lowry bases contain hydroxide. All Bronsted-Lowry bases contain hydroxide. A pH of 0 is considered neutral. The pH of a 12.0 M solution of HCl is -1.1. All buffer solutions operate at a pH at or near 7. Answer()

Explanation / Answer

19) C is the answer

20) D is the answer

pH of 7 is considered neutral not pH=0.

Normally most buffer solutions operate at 7 but not all. Some buffer solutions operate between 2.5 to 12 also. Hence it is false.

pH =-log( [H+] ) =-log (12) 1.08 =1.1

Brønsted-Lowry base is a proton (hydrogen ion) acceptor.

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