Chemistry for Today: General, Organic, and Biochemistry
9th Edition
ISBN: 9781305960060
Author: Spencer L. Seager, Michael R. Slabaugh, Maren S. Hansen
Publisher: Cengage Learning
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Chapter 9, Problem 9.104E
Interpretation Introduction
Interpretation:
The molecular weight of the solid acid is to be determined.
Concept introduction:
The number of moles a substance is given as,
Where,
•
•
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Piperazine, C4H10N2, is a diprotic weak base (pKb1 = 4.22 and pKb2 = 8.67). A sample of piperazine is dissolved in 100.0 mL of water and titrated with 0.500 M HCl. It takes 48.00 mL of HCl to reach the second equivalence point.
Calculate the pH after the following amounts of HCl have been added: 0 mL, 12.00mL, 24.00mL,36.00mL, 48.00mL, and 60.00mL
Compare the pH of propionic acid and nitric acid when they are dissolved in water at a concentration of 20 mM. This should include writing a balanced equation describing the acid-base reactions involved, calculation of the pKa for both, calculation of pH, and calculation of the percent dissociation of both.
مجموعة ٥
: 50 ml of an ammonia solution with a specific weight of 1.42 and a purity of 52.2% mixed with another 50 ml of an ammonia solution of a specific weight of 1.83 and a purity of 95.6% by weight, then the volume of the solution was made 1.5 liters. Calculate the pH of this solution and show the change in it if 100 ml of it was taken from it and diluted to 250 ml with distilled water. If you know that the molecular weight of ammonia is 17 and the ammonia ionization constant (Kb) is 1.75x10-5 *
Chapter 9 Solutions
Chemistry for Today: General, Organic, and Biochemistry
Ch. 9 - Write the dissociation equations for the following...Ch. 9 - Write the dissociation equations for the following...Ch. 9 - Each of the following produces a basic solution...Ch. 9 - Prob. 9.4ECh. 9 - Identify each Brnsted acid and base in the...Ch. 9 - Prob. 9.6ECh. 9 - Prob. 9.7ECh. 9 - Prob. 9.8ECh. 9 - Prob. 9.9ECh. 9 - Write equations to represent the Brnsted acid...
Ch. 9 - Write a formula for the conjugate base formed when...Ch. 9 - Write a formula for the conjugate base formed when...Ch. 9 - Prob. 9.13ECh. 9 - Prob. 9.14ECh. 9 - The following reactions illustrate Brnsted...Ch. 9 - Prob. 9.16ECh. 9 - Write equations to illustrate the acid-base...Ch. 9 - Prob. 9.18ECh. 9 - Prob. 9.19ECh. 9 - Prob. 9.20ECh. 9 - Prob. 9.21ECh. 9 - Prob. 9.22ECh. 9 - The acid H3C6H5O7 forms the citrate ion, C6H5O73,...Ch. 9 - The acid H2C4H4O4 forms the succinate ion,...Ch. 9 - Prob. 9.25ECh. 9 - Prob. 9.26ECh. 9 - Calculate the molar concentration of OH in water...Ch. 9 - Calculate the molar concentration of OH in water...Ch. 9 - Calculate the molar concentration of H3O+ in water...Ch. 9 - Prob. 9.30ECh. 9 - Classify the solutions represented in Exercises...Ch. 9 - Classify the solutions represented in Exercises...Ch. 9 - Prob. 9.33ECh. 9 - Prob. 9.34ECh. 9 - Determine the pH of water solutions with the...Ch. 9 - Prob. 9.36ECh. 9 - Prob. 9.37ECh. 9 - Determine the pH of water solutions with the...Ch. 9 - Determine the [H+] value for solutions with the...Ch. 9 - Determine the [H+] value for solutions with the...Ch. 9 - Prob. 9.41ECh. 9 - Prob. 9.42ECh. 9 - The pH values listed in Table 9.1 are generally...Ch. 9 - Prob. 9.44ECh. 9 - Prob. 9.45ECh. 9 - Prob. 9.46ECh. 9 - Prob. 9.47ECh. 9 - Using the information in Table 9.4, describe how...Ch. 9 - Write balanced molecular equations to illustrate...Ch. 9 - Write balanced molecular equations to illustrate...Ch. 9 - Prob. 9.51ECh. 9 - Prob. 9.52ECh. 9 - Prob. 9.53ECh. 9 - Prob. 9.54ECh. 9 - Write balanced molecular, total ionic, and net...Ch. 9 - Prob. 9.56ECh. 9 - Prob. 9.57ECh. 9 - Prob. 9.58ECh. 9 - Prob. 9.59ECh. 9 - Prob. 9.60ECh. 9 - Prob. 9.61ECh. 9 - Prob. 9.62ECh. 9 - Prob. 9.63ECh. 9 - Prob. 9.64ECh. 9 - Prob. 9.65ECh. 9 - Prob. 9.66ECh. 9 - Prob. 9.67ECh. 9 - Prob. 9.68ECh. 9 - Prob. 9.69ECh. 9 - Prob. 9.70ECh. 9 - Determine the number of moles of each of the...Ch. 9 - Prob. 9.72ECh. 9 - Prob. 9.73ECh. 9 - Determine the number of equivalents and...Ch. 9 - Determine the number of equivalents and...Ch. 9 - Prob. 9.76ECh. 9 - Prob. 9.77ECh. 9 - Prob. 9.78ECh. 9 - Prob. 9.79ECh. 9 - The Ka values have been determined for four acids...Ch. 9 - Prob. 9.81ECh. 9 - Prob. 9.82ECh. 9 - Prob. 9.83ECh. 9 - Prob. 9.84ECh. 9 - Prob. 9.85ECh. 9 - Prob. 9.86ECh. 9 - Arsenic acid (H3AsO4) is a moderately weak...Ch. 9 - Explain the purpose of doing a titration.Ch. 9 - Prob. 9.89ECh. 9 - Prob. 9.90ECh. 9 - Prob. 9.91ECh. 9 - Prob. 9.92ECh. 9 - Prob. 9.93ECh. 9 - Prob. 9.94ECh. 9 - Prob. 9.95ECh. 9 - Prob. 9.96ECh. 9 - A 25.00-mL sample of gastric juice is titrated...Ch. 9 - A 25.00-mL sample of H2C2O4 solution required...Ch. 9 - Prob. 9.99ECh. 9 - Prob. 9.100ECh. 9 - The following acid solutions were titrated to the...Ch. 9 - The following acid solutions were titrated to the...Ch. 9 - Prob. 9.103ECh. 9 - Prob. 9.104ECh. 9 - Prob. 9.105ECh. 9 - Prob. 9.106ECh. 9 - Prob. 9.107ECh. 9 - Predict the relative pH greater than 7, less than...Ch. 9 - Prob. 9.109ECh. 9 - Explain why the hydrolysis of salts makes it...Ch. 9 - How would the pH values of equal molar solutions...Ch. 9 - Write equations similar to Equations 9.48 and 9.49...Ch. 9 - Prob. 9.113ECh. 9 - Prob. 9.114ECh. 9 - Prob. 9.115ECh. 9 - a.Calculate the pH of a buffer that is 0.1M in...Ch. 9 - Which of the following acids and its conjugate...Ch. 9 - Prob. 9.118ECh. 9 - Prob. 9.119ECh. 9 - What ratio concentrations of NaH2PO4 and Na2HPO4...Ch. 9 - Prob. 9.121ECh. 9 - Prob. 9.122ECh. 9 - Prob. 9.123ECh. 9 - Prob. 9.124ECh. 9 - Prob. 9.125ECh. 9 - Prob. 9.126ECh. 9 - Prob. 9.127ECh. 9 - Prob. 9.128ECh. 9 - Prob. 9.129ECh. 9 - Bottles of ketchup are routinely left on the...Ch. 9 - Prob. 9.131ECh. 9 - Prob. 9.132ECh. 9 - Prob. 9.133ECh. 9 - Prob. 9.134ECh. 9 - Prob. 9.135ECh. 9 - Prob. 9.136ECh. 9 - Prob. 9.137ECh. 9 - A base is a substance that dissociates in water...Ch. 9 - Prob. 9.139ECh. 9 - Prob. 9.140ECh. 9 - What is the formula of the hydronium ion? a.H+...Ch. 9 - Which of the following substances has a pH closest...Ch. 9 - Dissolving H2SO4 in water creates an acid solution...Ch. 9 - Prob. 9.144ECh. 9 - A common detergent has a pH of 11.0, so the...Ch. 9 - Prob. 9.146ECh. 9 - The pH of a blood sample is 7.40 at room...Ch. 9 - Prob. 9.148ECh. 9 - Prob. 9.149ECh. 9 - Prob. 9.150ECh. 9 - Prob. 9.151ECh. 9 - Which of the following compounds would be...Ch. 9 - A substance that functions to prevent rapid,...Ch. 9 - Which one of the following equations represents...Ch. 9 - Which reaction below demonstrates a neutralization...Ch. 9 - In titration of 40.0mL of 0.20MNaOH with 0.4MHCl,...Ch. 9 - When titrating 50mL of 0.2MHCl, what quantity of...
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