Concept explainers
Which of the following is a Lewis acid but not a Brønsted acid? (Select all that apply.)
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Chemistry
- 1. Which of the following can act as a Lewis acid? (Hint : In each case, draw the Lewis electron dot structure of the molecule or ion. Are there lone pairs of electrons on the central atom? If so, it can be a Lewis base. Does the central atom lack an electron pair? If so, it can behave as a Lewis acid.) PH3 BCl3 H2S HS−arrow_forwardWhich of the following are not strong acids? (choose all that apply) HCIO4 HI HNO3 HF HCIO2 HBr HNO2 H2SO4arrow_forwardDetermine the pH of the solution resulting from mixing a solution of 154 mL of HNO2 (Ka = 5.62e – 04) at a 1.800 M concentration, with 115 mL of a 1.400 M solution of C'sOH ? O (a) 3.250 O (b) 1.696 O (c) 3.392 O (d) 3.192 O (e) 0.308arrow_forward
- Which weak acid solution has the greatest percent ionization? Which solution has the lowest (most acidic) pH?(a) 0.100 M HC2H3O2(b) 0.500 M HC2H3O2(c) 0.0100 M HC2H3O2arrow_forwardWhich of the following ions could be classified as basic? (select all that apply) K+ co32- CH3CO- H+ (H30) Nat NO3 NH4* PO43- OH CI Which of the following ions could be classified as acidic? (select all that apply) Co2- NH4* CI H* (H30*) CH3COO" PO43- Na+ K+ NO3 OH Which of the following ions could be classified as pH neutral? (select all that apply) co32- H* (H30*) NO3arrow_forwardWhat is the pH of a 5.0M NH4NO3 solution? (A) 9.72 (B) 2.05 (C) 4.27 (D) 5.3x10-3 NH4+ is an acid (conjugate of NH3). Find Ka make ICE table. The correct answer is (C), show howarrow_forward
- A solution whose pH is equal to 4.0 has a hydrogen ion concentration of _____. (A)1 x 104 M(B)1 x 10-4 M(C)1 x 10-10 M(D)1 x 10-10 M_______________________________arrow_forwardWhat is the pH of a 0.40 M solution of benzoic acid,C6H5COOH? (The Ka value for benzoic acid is given inTable )(a) 2.30 (b) 2.10 (c) 1.90 (d) 4.20 (e) 4.60arrow_forward55. Determine [H3O+] in each acid solution. If the acid is weak, indicate the value that [H3O+] is less than. (a) 1.7 M HBr (b) 1.5 M HNO3 (c) 0.38 M H₂CO3 (d) 1.75 M HCHO₂arrow_forward
- Which is true of acidic solutions? (A) correct answer is not available (B) more OH- ions than H+ ions (C) same amouint of H+ ions and OH- ions (D) more H+ ions than OH- ionsarrow_forwardCalculate the pH of a solution that is 7.22 × 10–4 M C6H5NH2. Kb is 3.8 × 10–10. Question 26 options: A) 6.28 B) 7.72 C) 6.50 D) 7.50 E) none of thesearrow_forward23 What is the pH of a solution composed of 0.20 M NH3 and 0.15 M NHẠCI? (Kb NH3 = 1.8 x 10*) (a) 2.15 (b) 4.62 (c) 8.26 (d) 9.38arrow_forward
- Chemistry & Chemical ReactivityChemistryISBN:9781133949640Author:John C. Kotz, Paul M. Treichel, John Townsend, David TreichelPublisher:Cengage LearningChemistry: Matter and ChangeChemistryISBN:9780078746376Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl WistromPublisher:Glencoe/McGraw-Hill School Pub Co