04:22What Makes Something Acidic? | Acids, Bases & Alkali's | Chemistry | FuseSchoolFuseSchool - Global Education521views
Multiple ChoiceWhich of the following compound(s) cannot be classified as an acid?A. H2SB. HCNC. H2D. C2H6E. All are acids1238views2rank5comments
Multiple ChoiceWhich of the following acids would be classified as the strongest?1673views3rank5comments
Multiple ChoiceRank the following oxyacids in terms of increasing acidity. a) HClO3b) HBrO4c) HBrO3d) HClO41622views3rank1comments
Multiple ChoiceClassify each of the following as a strong acid, weak acid, strong base or weak base.1311views2rank3comments
Multiple ChoiceClassify each of the following as a strong acid, weak acid, Strong base, or weak base. 771views1rank2comments
Multiple ChoiceClassify each of the following as a strong acid, weak acid, strong base or weak base.838views4rank5comments
Multiple ChoiceWhich of the following is true in regards to HNO3? a) It has a bitter taste. b) It produces H+ ions in water.c) It exists as only molecules when dissolved in H2O. d) It decreases the acidity of the solution.337views6rank
Textbook QuestionConsider the conjugate bases, 1X-, Y-, Z-2 in Problem 2. If you mix equal concentrations of reactants and products, which of the following reactions will proceed to the left? (LO 16.3) (a) HX + Y- HY + X- (b) HX + Z- HZ + X- (c) HY + X- HX + Y- (d) HZ + Y- HY + Z-303views
Textbook QuestionThe following diagrams represent aqueous solutions of three acids, HX, HY, and HZ. The water molecules have been omitted for clarity, and the hydrated proton is represented as H+ rather than H3O+. (a) Which of the acids is a strong acid? Explain. 584views
Textbook QuestionEach of the three molecules shown here contains an OH group, but one molecule acts as a base, one as an acid, and the third is neither acid nor base. (c) Which one is neither acidic nor basic? 661views
Textbook QuestionPhenylephrine, an organic substance with molecular formula C9H13NO2, is used as a nasal decongenstant in over-thecounter medications. The molecular structure of phenylephrine is shown below using the usual shortcut organic structure. (a) Would you expect a solution of phenylephrine to be acidic, neutral, or basic? 938views
Textbook QuestionAmmonia 1NH32 has base dissociation constant 1Kb2 of 1.8 * 10-5. What is the concentration of an aqueous ammonia solution that has a pH of 11.68? (LO 16.11) (a) 0.28 M (b) 3.6 M (c) 9.0 * 10-3 M (d) 1.3 M699views
Textbook QuestionWhich of the following statements is false? (a) An Arrhenius base increases the concentration of OH- in water. (b) A Brønsted-Lowry base is a proton acceptor. (c) Water can act as a Brønsted–Lowry acid. (d) Water can act as a Brønsted–Lowry base. (e) Any compound that contains an –OH group acts as a Brønsted-Lowry base.517views
Textbook QuestionPredict the products of the following acid–base reactions, and predict whether the equilibrium lies to the left or to the right of the reaction arrow: (c) NO2-1aq2 + H2O1l2 Δ988views
Textbook QuestionPredict the products of the following acid–base reactions, and predict whether the equilibrium lies to the left or to the right of the reaction arrow: (c) HCO3-1aq2 + F-1aq2 Δ977views
Textbook QuestionLabel each of the following substances as an acid, base, salt, or none of the above. Indicate whether the substance exists in aqueous solution entirely in molecular form, entirely as ions, or as a mixture of molecules and ions. (d) Ba1OH22.948views
Textbook QuestionThe pH of a solution of NH3 and NH4Br is 8.90. What is the molarity of NH4Br if the molarity of NH3 is 0.016 M?874views
Textbook QuestionIdentify the weakest acid in each of the following sets. Explain your reasoning. (a) H2SO3, HClO3, HClO41357views1rank
Textbook QuestionLook up the values of Ka in Appendix C for C6H5OH, HNO3, CH3CO2H, and HOCl, and arrange these acids in order of: (b) Decreasing percent dissociation.621views
Textbook QuestionIn nonaqueous solvents, it is possible to react HF to create H2F+. Which of these statements follows from this observation? (a) HF can act like a strong acid in nonaqueous solvents, (b) HF can act like a base in nonaqueous solvents, (c) HF is thermodynamically unstable, (d) There is an acid in the nonaqueous medium that is a stronger acid than HF.596views
Textbook QuestionCalculate the concentrations of all species present and the pH in 0.10 M solutions of the following substances. See Appendix C for values of equilibrium constants. (b) Sodium acetate, Na1CH3CO22735views
Textbook QuestionThe AIDS drug zalcitabine (also known as ddC) is a weak base with a pKb of 9.8. What percentage of the base is protonated in an aqueous zalcitabine solution containing 565 mg>L?520views
Textbook QuestionCalculate the pH and the concentrations of all species present (H3O+ , F-, HF, Cl-, and OH-) in a solution that contains 0.10 M HF 1Ka = 3.5 * 10-42 and 0.10 M HCl.732views
Textbook QuestionIn the case of very weak acids, 3H3O+ 4 from the dissociation of water is significant compared with 3H3O+ 4 from the dissociation of the weak acid. The sugar substitute saccharin 1C7H5NO3S2, for example, is a very weak acid having Ka = 2.1 * 10-12 and a solubility in water of 348 mg/100 mL. Calculate 3H3O+ 4 in a saturated solution of saccharin. (Hint: Equilibrium equations for the dissociation of saccharin and water must be solved simultaneously.)435views
Textbook QuestionA 1.000 L sample of HF gas at 20.0 °C and 0.601 atm pressure was dissolved in enough water to make 50.0 mL of hydrofluoric acid. (b) To what volume must you dilute the solution to triple the percent dissociation?378views
Open QuestionWhich of these substances contributes to soap's slippery texture: an acid, a base, carbonate, or water?185views
Open QuestionAccording to the Arrhenius concept, if HNO3 were dissolved in water, it would act as158views