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Incorrect Question 2 0/1 pts What change will be...
Please explain the correct answer for both questions. Thank you! Incorrect Question 5 0/1 pts A...
Please explain the correct
answer for both questions. Thank you!
Incorrect Question 5 0/1 pts A 25.0 mL sample of 0.723 M HCIO4 is titrated with 0.27 M KOH solution. The H30* concentration after the addition of 80.0 mL of KOH is M. (Cl is chlorine, not carbon and iodine) 0.4 3x10-13 1x107 0.7 4x10-2 Incorrect Question 6 0/1 pts What could be the pKof this weak acid according to the titration curve below? Weak Acid Titration Curve PH 10...
ire anf eisures are complete 1. Caleulate the concentration (in M) of hydroxide ions in a...
ire anf eisures are complete 1. Caleulate the concentration (in M) of hydroxide ions in a solution at 25.0°C with a pOH of 4.223. D)599 x ǐo-19 E) 1.00 x 10- A)5.98 × 10-5 2. An aqueous solution C)1.67 x 104 will produce an acidic solution D) NHBr B) 1.67× 10-10 E) MgCl 12.0 pH of 100 solution 80 in flask 6.0 4.0 2.0 Equivalence Point 5 10 15 20 25 30 35 40 45 mL of 0.115 M NaOH...
Suppose that a small amount of HCl is added to a buffer solution containing HF(aq) and...
Suppose that a small amount of HCl is added to a buffer solution containing HF(aq) and NaF(aq). What change will occur to the buffer solution? The concentration of fluoride ion will decrease and the concentration of hydrogen fluoride will increase. The concentration of fluoride ion will increase, and the concentration of hydrogen fluoride will decrease. The concentration of hydronium ion will decrease. The concentration of fluoride ion will increase, and the concentration of hydrogen fluoride will increase.
Please explain the correct answer for both questions. Thank you! Incorrect Question 7 0/1 pts The...
Please explain the correct
answer for both questions. Thank you!
Incorrect Question 7 0/1 pts The concentration of iodide ions in a saturated solution of lead (11) iodide is_ The solubility product constant of Pblz is 1.4x10-8. 3.5x10-9 3.0x10-3 1.5x103 1.4x10-8 3.8x10-4 Incorrect Question 9 0/1 pts The molar solubility of lead () chloride (PbCl2) is 1.6x102 M. What is the Ksp of PbCl2? 4.1x10-6 5.0x10-4 1.6x10-2 3.1x107 1.6x10-5
Please explain the correct answer to all three questions. Thank you! Incorrect Question 11 0/1 pts...
Please explain the correct
answer to all three questions. Thank you!
Incorrect Question 11 0/1 pts A 25.0 mL sample of a solution of a monoprotic acid is titrated with a 0.115 M NaOH solution. The titration curve below was obtained. Which of the following indicators would be best for this titration? 12.01 10.0 8.0 pH of solution in flask 6.01 Equivalence Point Indicator methyl orange methyl red bromocresol purple bromthymol blue thymol blue phenolpthalein pka 3.46 5.00 6.12 7.10...
O Neutral What change will be caused by the addition of a small ámount of NaOH...
O Neutral What change will be caused by the addition of a small ámount of NaOH to a solution containing F and HF? 6. The concentration of F- will decrease and the concentration of HF willH e o The concentration of F will decrease and the concentration of HF will o The concentration of F" will increase and the concentration of HF will o The concentration of F" will increase and the concentration of HF will increase. decrease. increase. decrease.
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...
Please explain the correct answer to both questions. Thank you! Incorrect Question 19 0/1 pts The...
Please explain the correct
answer to both questions. Thank you!
Incorrect Question 19 0/1 pts The value of A Sº for the catalytic hydrogenation of acetylene to ethene, C2H2(g) + H2(g) →C2H4 (g) is_ J/K.mol. Use the following thermodynamic quantities for selected substances at 298.15 K (25°C). Substance AHºf (kJ/mol) AG°f (kJ/mol) S (J/K-mol) 2.84 Carbon C(s, diamond) 1.88 C(s, graphite) 0 C2H2(g) 226.7 C2H4 (g) 52.30 C2H6 (g) -84.68 CO(g) -110.5 CO2 (g) -393.5 209.2 68.11 -32.89 -137.2 -394.4...
Please chose the correct answer, and explain why. Thank you. Question 9 1 pts What is...
Please chose the correct answer, and explain why. Thank
you.
Question 9 1 pts What is the primary difference between economic analyses of climate change that advocate for a significant policy response versus those analyses that suggest a modest response? o Whether the analysis considers nonuse benefits O Whether the analysis considers nonmarket impacts The average increase in future temperatures The choice of the discount rate Question 10 1 pts Suppose that the government is using cost-benefit analysis to decide...
I would like help understanding these questions. Thank you for your time! Acids/Bases 1. Calculate the...
I would like help understanding these questions.
Thank you for your time!
Acids/Bases 1. Calculate the volume (in mL) of a 1.75 M KOH solution required to completely titrate (neutralize) 16.0 mL of a 3.00 M phosphoric acid solution. 2. Calculate the concentration of a sodium hydroxide solution that required 43.40 mL to completely titrate 26.50 mL of a 0.350 M oxalic acid (H2C2O4) solution. 3. Calculate the pH of the following: (a) a solution containing a hydronium concentration of...
Please explain the correct
answer for both questions. Thank you!
Incorrect Question 5 0/1 pts A 25.0 mL sample of 0.723 M HCIO4 is titrated with 0.27 M KOH solution. The H30* concentration after the addition of 80.0 mL of KOH is M. (Cl is chlorine, not carbon and iodine) 0.4 3x10-13 1x107 0.7 4x10-2 Incorrect Question 6 0/1 pts What could be the pKof this weak acid according to the titration curve below? Weak Acid Titration Curve PH 10...
ire anf eisures are complete 1. Caleulate the concentration (in M) of hydroxide ions in a solution at 25.0°C with a pOH of 4.223. D)599 x ǐo-19 E) 1.00 x 10- A)5.98 × 10-5 2. An aqueous solution C)1.67 x 104 will produce an acidic solution D) NHBr B) 1.67× 10-10 E) MgCl 12.0 pH of 100 solution 80 in flask 6.0 4.0 2.0 Equivalence Point 5 10 15 20 25 30 35 40 45 mL of 0.115 M NaOH...
Suppose that a small amount of HCl is added to a buffer solution containing HF(aq) and NaF(aq). What change will occur to the buffer solution? The concentration of fluoride ion will decrease and the concentration of hydrogen fluoride will increase. The concentration of fluoride ion will increase, and the concentration of hydrogen fluoride will decrease. The concentration of hydronium ion will decrease. The concentration of fluoride ion will increase, and the concentration of hydrogen fluoride will increase.
Please explain the correct
answer for both questions. Thank you!
Incorrect Question 7 0/1 pts The concentration of iodide ions in a saturated solution of lead (11) iodide is_ The solubility product constant of Pblz is 1.4x10-8. 3.5x10-9 3.0x10-3 1.5x103 1.4x10-8 3.8x10-4 Incorrect Question 9 0/1 pts The molar solubility of lead () chloride (PbCl2) is 1.6x102 M. What is the Ksp of PbCl2? 4.1x10-6 5.0x10-4 1.6x10-2 3.1x107 1.6x10-5
Please explain the correct
answer to all three questions. Thank you!
Incorrect Question 11 0/1 pts A 25.0 mL sample of a solution of a monoprotic acid is titrated with a 0.115 M NaOH solution. The titration curve below was obtained. Which of the following indicators would be best for this titration? 12.01 10.0 8.0 pH of solution in flask 6.01 Equivalence Point Indicator methyl orange methyl red bromocresol purple bromthymol blue thymol blue phenolpthalein pka 3.46 5.00 6.12 7.10...
O Neutral What change will be caused by the addition of a small ámount of NaOH to a solution containing F and HF? 6. The concentration of F- will decrease and the concentration of HF willH e o The concentration of F will decrease and the concentration of HF will o The concentration of F" will increase and the concentration of HF will o The concentration of F" will increase and the concentration of HF will increase. decrease. increase. decrease.
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...
Please explain the correct
answer to both questions. Thank you!
Incorrect Question 19 0/1 pts The value of A Sº for the catalytic hydrogenation of acetylene to ethene, C2H2(g) + H2(g) →C2H4 (g) is_ J/K.mol. Use the following thermodynamic quantities for selected substances at 298.15 K (25°C). Substance AHºf (kJ/mol) AG°f (kJ/mol) S (J/K-mol) 2.84 Carbon C(s, diamond) 1.88 C(s, graphite) 0 C2H2(g) 226.7 C2H4 (g) 52.30 C2H6 (g) -84.68 CO(g) -110.5 CO2 (g) -393.5 209.2 68.11 -32.89 -137.2 -394.4...
Please chose the correct answer, and explain why. Thank
you.
Question 9 1 pts What is the primary difference between economic analyses of climate change that advocate for a significant policy response versus those analyses that suggest a modest response? o Whether the analysis considers nonuse benefits O Whether the analysis considers nonmarket impacts The average increase in future temperatures The choice of the discount rate Question 10 1 pts Suppose that the government is using cost-benefit analysis to decide...
I would like help understanding these questions.
Thank you for your time!
Acids/Bases 1. Calculate the volume (in mL) of a 1.75 M KOH solution required to completely titrate (neutralize) 16.0 mL of a 3.00 M phosphoric acid solution. 2. Calculate the concentration of a sodium hydroxide solution that required 43.40 mL to completely titrate 26.50 mL of a 0.350 M oxalic acid (H2C2O4) solution. 3. Calculate the pH of the following: (a) a solution containing a hydronium concentration of...
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