09:18Ka and acid strength | Chemical processes | MCAT | Khan AcademyKhan Academy Organic Chemistry601views
Multiple ChoiceIf the Kb of NH3 is 1.76 x 10-5, determine the acid dissociation constant of its conjugate acid. 1260views1rank3comments
Multiple ChoiceWhich Bronsted-Lowry base has the greatest concentration of hydroxide ions? 727views2rank
Multiple ChoiceThe Ka value for a weak acid is _________ than the Ka value for a strong acid because the weak acid ionizes to a _________ extent than the strong acid.464views
Multiple ChoiceCalculate the pH of a 0.500 M pyridine (C5H5N) solution. Kb value for pyridine is 1.7 × 10−9.1307views
Multiple ChoiceHypobromous acid (Ka = 2.8 × 10−9) and hydrocyanic acid (Ka = 4.9 × 10−10) are both weak acids. Determine if reactants or products are favored in the following reaction.HBrO (aq) + CN− (aq) ⇌ BrO− (aq) + HCN (aq)a) reactants b) products c) both directions are favored equally d) neither direction is favored407views6rank
Multiple ChoiceIdentify a Bronsted-Lowry acid with weakest conjugate base.a) H3BO3 Ka = 5.4 × 10−10b) HF Ka = 3.5 × 10−4c) HNO2 Ka = 4.6 × 10−4d) HClO Ka = 2.9 × 10−8340views5rank
Multiple ChoiceIdentify which of the compounds is the strongest species.a) Iodic acid pKa = 0.80 b) Acetic acid pKb = 9.24 c) Formic acid pKa = 3.75 d) Ammonium pKb = 4.75 268views
Multiple ChoiceDetermine the pKa given the Kb of the following bases:i) NH3 Kb = 1.76 × 10−5 ; NH4+ pKa = ____________ii) C6H5NH2 Kb = 3.9 × 10−10 ; C6H5NH3+ pKa = ____________301views4rank
Open QuestionGiven that Ka for HIO is 3.2×10−11 at 25 °C, what is the value of 𝐾b for IO− at 25 °C?174views
Open QuestionGiven that a base has a Kb value of 8.36×10−4, what is the Ka of its conjugate acid?145views
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