Multiple ChoiceCalculate the [H+] of a 0.50 M solution of methylammonium bromide, CH3NH3Br. The Kb of methylamine, CH3NH2, is given as 4.4 x 10-4.285views2rank2comments
Multiple ChoiceAn unknown weak acid has an initial concentration of 0.55 M. What is the pH of the solution if the weak acid also has a pKa of 5.79?237views2rank
Open QuestionCalculate [H3O+], [ClO4–], and [OH–] in an aqueous solution that is 0.130 M in HClO4(aq) at 25 °C.112views
Open QuestionWhat is the H+(aq) concentration in 0.05 M HCN(aq)? (the Ka for HCN is 5.0 x 10-10.)91views
Open QuestionWhat is the pH of a 0.0620 M solution of hydrocyanic acid, HCN (Ka = 4.9 × 10-10)?122views
Open QuestionWhat is [H+] in a 0.270 M solution of acrylic acid, CH2CHCOOH (Ka = 3.16 × 10-5)?100views
Open QuestionFormic acid is found in ant venom. What would be the pH of a 0.30 m formic acid solution? The Ka of formic acid is 1.8 x 10-4. a. 0.52 b. 4.27 c. 2.13 d. 8.61 e. 5.3981views
Open QuestionCalculate [H3O+], [ClO4–], and [OH–] in an aqueous solution that is 0.130 M in HClO4(aq) at 25°C.112views
Open QuestionWhat is [H⁺] in a 0.270 M solution of acrylic acid, CH2CHCOOH (Ka = 3.16 × 10⁻⁵)?101views
Open QuestionNitrous acid, HNO2, has a ka of 7.1 x 10–4. what is the [H3O+] in a 0.60 M solution of HNO2?81views
Open QuestionFind the percent ionization of a 0.337 m HF solution. the ka for hf is 3.5 × 10-4. What would you expect the percent ionization to be for the same concentration of hydrochloric acid (HCl)? Explain.115views