Open Question
A 0.115 M solution of a weak acid (HA) has a pH of 3.29. Calculate the acid ionization constant (Ka) for the acid.
Ch.16 - Acids and Bases
Chapter 16, Problem 34
Identify each substance as an acid or a base and write a chemical equation showing how it is an acid or a base in aqueous solution according to the Arrhenius definition. a. NaOH(aq) b. H2SO4(aq) c. HBr(aq) d. Sr(OH)2(aq)
Verified step by step guidance1
Identify the Arrhenius definition: An acid is a substance that increases the concentration of H+ ions in aqueous solution, while a base increases the concentration of OH- ions.
For NaOH(aq): Recognize that NaOH is a base because it dissociates in water to produce OH- ions. Write the equation: NaOH(aq) \rightarrow Na^+(aq) + OH^-(aq).
For H2SO4(aq): Recognize that H2SO4 is an acid because it dissociates in water to produce H+ ions. Write the equation: H2SO4(aq) \rightarrow 2H^+(aq) + SO4^{2-}(aq).
For HBr(aq): Recognize that HBr is an acid because it dissociates in water to produce H+ ions. Write the equation: HBr(aq) \rightarrow H^+(aq) + Br^-(aq).
For Sr(OH)2(aq): Recognize that Sr(OH)2 is a base because it dissociates in water to produce OH- ions. Write the equation: Sr(OH)2(aq) \rightarrow Sr^{2+}(aq) + 2OH^-(aq).
Related Practice
Open Question
Determine the concentrations of OH-, pH, and pOH of a solution that is 0.125 M in CO32-.
Textbook Question
Identify each substance as an acid or a base and write a chemical equation showing how it is an acid or a base according to the Arrhenius definition. c. KOH(aq)
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Textbook Question
In each reaction, identify the Brønsted–Lowry acid, the Brønsted–Lowry base, the conjugate acid, and the conjugate base. b. NH3(aq) + H2O(l) ⇌ NH4+(aq) + OH–(aq)
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Textbook Question
In each reaction, identify the Brønsted–Lowry acid, the Brønsted–Lowry base, the conjugate acid, and the conjugate base. d. C5H5N(aq) + H2O(l) ⇌ C5H5NH+(aq) + OH–(aq)
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Textbook Question
In each reaction, identify the Brønsted–Lowry acid, the Brønsted–Lowry base, the conjugate acid, and the conjugate base. b. CH3NH2(aq) + H2O(l) ⇌ CH3NH3+(aq) + OH–(aq)
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