Homework Answers
Answer:
Option b) HAsO4(-2) it has Pka value 6.97. Which is very close to the given pH of the buffer at 5. As it undergoes with the Henderson Hasselbalch equation of acidic buffer.
So option b is correct HAsO4-2
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3 pts Question 17 U What is the predominate species present in an aqueous solution of...
Question 13 3 pts What is the conjugate base of H2A5O4? HASO 2 O HASOA O...
Question 13 3 pts What is the conjugate base of H2A5O4? HASO 2 O HASOA O H AsO4 AsOy
1.What would be the predominate form(s) of the following elements in a pH-7 aqueous solution each...
1.What would be the predominate form(s) of the following elements in a pH-7 aqueous solution each under the following conditions. Remember that more than one compound may be present in a solution. For each element, provide the species under the three following conditions. a) saturated with 02 b) saturated with air c) saturated with H2 A. Nb B. Tc C. Co D. Cu E. Fe
33. What are the major species that are present in an aqueous solution of the strong...
33. What are the major species that are present in an aqueous solution of the strong acid Hl(aq)? 34. What does carbonic acid decompose into?
Complete the abundance diagram. below, by identifying the species present n an aqueous solution of 1.00...
Complete the abundance diagram. below, by identifying the species present n an aqueous solution of 1.00 M acetic acid (CH3COOH). The Ks, of acetic acid is 1 8 times 10-3 Noting to transcribe What is the approximate pH of a solution of 1.00 M CH3COOH?
D Question 17 4 pts Calculate the [H3O+] of each aqueous solution with the following (OH)....
D Question 17 4 pts Calculate the [H3O+] of each aqueous solution with the following (OH). NaOH solution with (OH'] = 1.0 x 102 [Choose] [H3O+] - ? [Choose] aspirin with (OH') - 1.8 x 10-11 M [H30*] ? [Choose] milk of magnesia with (OH-) - 1.0x 105M [H₃O+]=? sea water with (OH) - 2,5 x 10M (H.0"-
Question 12 3 pts What is the pH of an aqueous 0.10 M NaC,H,O solution? O...
Question 12 3 pts What is the pH of an aqueous 0.10 M NaC,H,O solution? O 2.82 O 8.37 O 5.82 O 11.44
Incorrect Question 4 0/4 pts Which of the following is the Arrhenius definition of an acid?...
Incorrect Question 4 0/4 pts Which of the following is the Arrhenius definition of an acid? A substance that is an H* donor A substance that produces OH ions in aqueous solution. A substance that is an H* acceptor. A substance that is an OH donor. A substance that produces Htions in aqueous solution. Incorrect Question 5 0/4 pts Which of the following is the Arrhenius definition of a base? A substance that is an H* donor. A substance that...
ca 2. What is the charge balance for an aqueous solution of arsenic acid, H3AsO4, in...
ca 2. What is the charge balance for an aqueous solution of arsenic acid, H3AsO4, in which the acid can dissociate to H2AsO4 , HASO4+-, and AsO4”. a) [H+] = [OH-] + [H2AsO4] + 2[HASO42-] + 3[AsO43-] (b) [H+] = [OH-] + [H2AsO4] + [HASO42-] + [AsO43-] c) [H+] = 2[OH-] + 2[H2AsO4] + 2[HASO42-] + 2[AsO43-] d) [H3AsO4) = 2[H2As04] + 2[HAsO42-] + 2[AsO4?]
1) Draw which species would be present if you were to dissolve the hydroxyl-acid shown below...
1) Draw which species would be present if you were to dissolve the hydroxyl-acid shown below in (a) aqueous solution at pH 7, (b) aqueous solution at pH 12, and (c) aqueous solution at pH O. 2) What would you expect to be the site of (a) protonation and (b) deprotonation if the compounds below were treated with an appropriate acid or base? In each case draw the conjugate acid or base forms. ОН
Question 29 3 pts What is the pH of an aqueous solution after 20.0 mL of...
Question 29 3 pts What is the pH of an aqueous solution after 20.0 mL of 0.60 M NaOH is added to a 40.0 ml. of 0.30 MH2C2O4? O 4.26 7.95 O 2.71 8.31
Question 13 3 pts What is the conjugate base of H2A5O4? HASO 2 O HASOA O H AsO4 AsOy
1.What would be the predominate form(s) of the following elements in a pH-7 aqueous solution each under the following conditions. Remember that more than one compound may be present in a solution. For each element, provide the species under the three following conditions. a) saturated with 02 b) saturated with air c) saturated with H2 A. Nb B. Tc C. Co D. Cu E. Fe
33. What are the major species that are present in an aqueous solution of the strong acid Hl(aq)? 34. What does carbonic acid decompose into?
Complete the abundance diagram. below, by identifying the species present n an aqueous solution of 1.00 M acetic acid (CH3COOH). The Ks, of acetic acid is 1 8 times 10-3 Noting to transcribe What is the approximate pH of a solution of 1.00 M CH3COOH?
D Question 17 4 pts Calculate the [H3O+] of each aqueous solution with the following (OH). NaOH solution with (OH'] = 1.0 x 102 [Choose] [H3O+] - ? [Choose] aspirin with (OH') - 1.8 x 10-11 M [H30*] ? [Choose] milk of magnesia with (OH-) - 1.0x 105M [H₃O+]=? sea water with (OH) - 2,5 x 10M (H.0"-
Question 12 3 pts What is the pH of an aqueous 0.10 M NaC,H,O solution? O 2.82 O 8.37 O 5.82 O 11.44
Incorrect Question 4 0/4 pts Which of the following is the Arrhenius definition of an acid? A substance that is an H* donor A substance that produces OH ions in aqueous solution. A substance that is an H* acceptor. A substance that is an OH donor. A substance that produces Htions in aqueous solution. Incorrect Question 5 0/4 pts Which of the following is the Arrhenius definition of a base? A substance that is an H* donor. A substance that...
ca 2. What is the charge balance for an aqueous solution of arsenic acid, H3AsO4, in which the acid can dissociate to H2AsO4 , HASO4+-, and AsO4”. a) [H+] = [OH-] + [H2AsO4] + 2[HASO42-] + 3[AsO43-] (b) [H+] = [OH-] + [H2AsO4] + [HASO42-] + [AsO43-] c) [H+] = 2[OH-] + 2[H2AsO4] + 2[HASO42-] + 2[AsO43-] d) [H3AsO4) = 2[H2As04] + 2[HAsO42-] + 2[AsO4?]
1) Draw which species would be present if you were to dissolve the hydroxyl-acid shown below in (a) aqueous solution at pH 7, (b) aqueous solution at pH 12, and (c) aqueous solution at pH O. 2) What would you expect to be the site of (a) protonation and (b) deprotonation if the compounds below were treated with an appropriate acid or base? In each case draw the conjugate acid or base forms. ОН
Question 29 3 pts What is the pH of an aqueous solution after 20.0 mL of 0.60 M NaOH is added to a 40.0 ml. of 0.30 MH2C2O4? O 4.26 7.95 O 2.71 8.31
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