hering. 6. The drinking water for Bloomington, Indiana, comes from Lake Monroe, which has a calcium concentration of 17 ppm. What is the pH of this lake? It may (or may not) help to remember that the atomic weight of calcium is 40.1 g(mol

hering. 6. The drinking water for Bloomington, Indiana, comes from Lake Monroe, which has a calcium concentration of 17 ppm. What is the pH of this lake? It may (or may not) help to remember that the atomic weight of calcium is 40.1 g(mol

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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11. An unknown weak base with a concentration of 0.0910 M has a pH of 12.40. What is the Kb of this base?
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៣ AA Learning E4 CH 16 17 and 18 prod03-cnow-owl.cengagenow.com Learning Learning Learning × Online tea... y dr. marlow... ember L... with We [References] Question 1 1 pt Question 2 2 pts Question 3 1 pt Question 4 2 pts Calculate the pH of a solution that has an ammonium chloride concentration of 0.046 M and an ammonia concentration of 0.045 M. K 1.8 x 10-5 Question 5 1 pt pH = Question 6 2 pts Question 7 1 pt Submit Answer Try Another Version 2 item attempts remaining Question 8 2 pts Question 9 1 pt
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Case Study Section 1 – pH Based on “The Case of the Mortified Mom: Acids, pH and Buffers” by Terry Platt (National Center for Case Study Teaching in Science) The Patient: Paramedics were called to the home of the Mathews family because their 3-year old daughter, Molly, had gotten into the medicine cabinet and consumed a large number of aspirin tablets. When the paramedics arrived Molly had vomited several times, with bits of undissolved tablets visible, but seemed sleepy, almost lethargic. She was rushed to the nearest Emergency Room. When she reached the hospital she was unarousable and was breathing rapidly and deeply. She was examined and lab samples were obtained. Above is the structure of aspirin, or acetylsalicylic acid, which is a weak acid with a pKa of 3.5. The active, and toxic at high doses, form is the protonated form. Question 9: What would be the consequence(s) of lower than normal blood pH? Cause proteins to denature Decrease in enzyme activities Limit…
b. I'm falling asleep.... The CO₂ concentration in a classroom can increase over the lecture period due to poor ventilation. You decide to measure the pH of pure water in contact with the atmosphere as an indirect way to determine whether you have adequate ventilation. You measure a pH value of 5.3. Assuming equilibrium, i. What is the concentration of CO2 in the classroom? ii. How does the value you calculated compare to the recommended safe level of 800-1000 ppm?
Case Study Section 1 – pH Based on “The Case of the Mortified Mom: Acids, pH and Buffers” by Terry Platt (National Center for Case Study Teaching in Science) The Patient: Paramedics were called to the home of the Mathews family because their 3-year old daughter, Molly, had gotten into the medicine cabinet and consumed a large number of aspirin tablets. When the paramedics arrived Molly had vomited several times, with bits of undissolved tablets visible, but seemed sleepy, almost lethargic. She was rushed to the nearest Emergency Room. When she reached the hospital she was unarousable and was breathing rapidly and deeply. She was examined and lab samples were obtained. Above is the structure of aspirin, or acetylsalicylic acid, which is a weak acid with a pKa of 3.5. The active, and toxic at high doses, form is the protonated form. What percent of ingested and absorbed aspirin is in the active form in the blood (average pH of 7.4) under normal conditions? 0.00013% 0.13%…
FOLLOW-UP QUESTIONS 1. A certain soft drink was analyzed and found to contain 0.080MH. Other ingredients of the drink include sugar or, in the diet form of the drink, an artificial sweetener. What property of this acid solution is overcome by using sugar or sweetener? 2. Every day, a manufacturing plant produces 5.0 x 103 L of NaOH waste of molarity 0.030 M. In order to comply with environmental regulations, this NaOH must be neutralized before being discharged as effluent. What mass of concentrated HCl will be required to neutralize it? ([HCI] = 12M; density = 1.2 kg/L) 4. Why would it be difficult to measure e concentration of acid in red wine or in a cola-type drink using the method in Part V? How could you overcome this difficulty? 5. There are some titrations in which the endpoint is obtained by measuring the electrical conductivity of the solution and watching for the point at which the conductivity is at a minimum. Such a titration is called an electrometric titration. An…
1.Carbon occurs in water in 3 different photons, CO2, HCO3', and CO3 2. a- Is there a certain pH value at which carbon occurs in all 3 forms? Yes/NO b- In seawater (pH =8.2) the greatest percentage of carbon occurs in the form HCO3? Yes/NO 2.Carbon can occur in Water in three different fotons (substance) as Carbon dioxide (CO2), hydrogen carbonate (HCO3), or Carbonate ( The pH value of (water indicates how high the percentage of three forms is (substance amount). The diagram shows these substances amount depending on the pH value. 100 80 Hideogen Carbonate 60 Carbon dioxide Carbonate (Co) 20 PH value 10 11 12 13 Which of the following is correct A)ln Seawater (pH value of 8.2) The greatest percentage of carbon occurs in the form of HCO3 B) There is a pH value at which carbon occurs in water in the form of CO, as in the form of HCO3 and CO3 2 a. Only A is correct b. Only B is correct c. Both are correct d. None is correctn dl
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A. Hydrolysis of salts For the treatment of his gastroesophageal reflux disease (GERD), Nanon must drink a salt solution with a pH between 8.00 to 8.50. Ohm, one of Nanon's suitors, wanted to give Nanon a 0.55 mM solution of a water-soluble salt produced from the ions Nat and CH,NO43-. 1. What is the chemical formula of the salt offered by Ohmt? 2. Write the hydrolysis reaction for the salt solution offered by Ohm. 3. Calculate the pH of the salt solution. Report in two decimal places. 4. Yes or No. Must Nanon accept the salt solution offered by Ohm? Relevant Ka values: CHEMICAL Ka1 Ka2 Каз FORMULA C4H,NO4 1.0 x 10-2 1.3 x 104 1.3 x 10-10
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