onjugate Pairs Part A According to the Brønsted-Lowry theory, an acid is any sub

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onjugate Pairs Part A According to the Brønsted-Lowry theory, an acid is any substance (molecule or ion) that can transfer a proton (H+ The following equation shows the equilbrium in an aqueous solution of methylamine Which of the following represents a conjugate acid-base pair? Hints ion) can accept a proton. Acid-base reactions are proton-transfer reactions, as follows: to another substance, and a base is any substance that CHyNH2 (aq)+H20(1) CHNH (a) + OH (aq) CH3NH2 and H2O CH3NH3 l and OH. acid base acid base Chemical species whose formulas differ only by one proton are said to be conjugate acid-base pairs. Thus, A is the conjugate base of the acid HA, and HA is the conjugate acid of the base A Similarly, B is the conjugate base of the acid BH and BH is the conjugate acid of the base B Strong acids have very weak conjugate bases, and very weak acids have strong conjugate bases. O H20 and OH CH3NH2 and OH Submit My Answers Give Up Part B What is the conjugate base of HSOs ? Express your answer as a chemical formula Submit My Answers Give Up

Explanation / Answer

Conjugate acid-base pair:

Two specis are said to comjugate acid-base pair if they are differe only by a single proton. The soecies having on proton higher in number is called acid while that having one proton less in number is called conjugate base.

Part A: H2O and -OH

Part B: Conjugate base of HSO3- : SO32 - (Remove one proton to get conjugate base)

Part C: Conjugate acid of HPO42- : H2PO4- (Add one proton to get conjugate acid)

Part D: Stroner the conjugate base weaker the acid

HZ (strongest), HX (intermediate), HY (weakest),

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