7th Edition

ISBN: 9781119497325

Author: JESPERSEN

Publisher: WILEY

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An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

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Textbook Question

Chapter 16, Problem 29PE

If 500.0 mL of a 0.20 M solution of ammonia is mixed with 500.0 mL of a 0.20 M solution of HBr , what is the pH of the resulting solution of NH 4 Br ?

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Chapter 16, Problem 28PE

Chapter 16, Problem 30PE

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A 100.mL of 0.250 M HNO2 is added to 200.mL of 0.100 M NaNO2. What is the concentration of HNO2 and NaNO2 once two solutions are mixed? What is the pH of this solution? Write a balanced equations showing what happens when NaOH is added, and when HCl is added to solution (b). What is the CHANGE in pH when 50.0 mL of 0.15 M NaOH have been added to solution (b)? What is the CHANGE in pH when 50.0 mL of 0.15 M HCl have been added to solution (b)?

Sodium benzoate, the sodium salt of benzoic acid, is used as a food preservative. A sample containing solid sodium benzoate mixed with sodium chloride is dissolved in 50.0 mL of 0.500 M HCl, giving an acidic solution (benzoic acid mixed with HCl). This mixture is then titrated with 0.393 M NaOH. After the addition of 46.50 mL of the NaOH solution, the pH is found to be 8.2. At this point, the addition of one more drop (0.02 mL) of NaOH raises the pH to 9.3. Calculate the mass of sodium benzoate (NaC6H5COO) in the original sample. (Hint: At the equivalence point, the total number of moles of acid [here HCl] equals the total number of moles of base [here, both NaOH and NaC6H5COO].)

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Chapter 16 Solutions

CHEMISTRY:MOLECULAR NATURE (LL)W/ACCESS

Ch. 16 - Prob. 1PE Ch. 16 - Practice Exercise 16.2 An aqueous solution of...Ch. 16 - Practice Exercise 16.3 Water draining from old...Ch. 16 - Because rain washes pollutants out of the air, the...Ch. 16 - Practice Exercise 16.5 Find the values of and ...Ch. 16 - Practice Exercise 16.6 Calculate the . (Hint: is...Ch. 16 - Practice Exercise 16.7 Calculate the , and pH in a...Ch. 16 - For each of the following acids, write the...Ch. 16 - For each of the following acids, write the...Ch. 16 - Practice Exercise 16.10 Use Table 16.2 to find all...

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