None If a solution of potassium hydroxide congtaining 40 g per dm^3 wasfound to neutralize twice its own volume of a sulphuric acid solution.What was the concentration of the acid? What mass of anhydroussulphate would be formed by the neutralization of 100 cm^3 of thealkaline solution? If twice as much acid as was needed for neutralizationwere added to 100 cm^3 of the alkaline, what would be the nature andmass of the salt?

To solve this problem, we need to use the concept of acid-base neutralization reactions and…

Answered: If a solution of potassium hydroxide…

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter10: Effect Of Electrolytes On Chemical Equilibria

Section: Chapter Questions

Problem 10.4QAP

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The hydrogen phthalate ion, C8HsO4, is a weak acid with Ka = 3.91 106. C8H5O4(aq)+H2O(l)C8H4O42(aq)+H3O+(aq) What is the pH of a 0.050 M solution of potassium hydrogen phthalate. KC8H5O4? Note: To find the pH for a solution of the anion, we must take into account that the ion is amphiprotic. It can be shown that, for most cases of amphiprotic ions, the H3O+ concentration is [H3O+]=Ka1Ka2 For phthalic acid, C8H6O4 is Ka1 is 1.12 103, and Ka2 is 3.91 106.
Follow the directions of Question 19 for the following acids: (a) hypochlorous acid (b) formic acid, HCHO2 (c) acetic acid, HC2H3O2 (d) hydrobromic acid (e) sulfurous acid
Boric acid, H3BO3, is not a Brønsted-Lowry acid but a Lewis acid.(a) Write an equation for its reaction with water.(b) Predict the shape of the anion thus formed.(c) What is the hybridization on the boron consistent with the shape you have predicted?
Magnesium trisilicate, Mg2Si3O8·H2O in medicine is an antacid. Explain theuse of magnesium silicate as an antacid to reduce acidity in the stomach. Give theequation of reaction. For titration of 5 ml of gastric juice, 10 ml of a 0.15 Msodium hydroxide solution were used. Does the patient need to takeMg2Si3O8·H2O (The concentration of hydrochloric acid in the stomach of a healthy person is constant and amounts to 160 mmol/L)?
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Calculate the pH and percent ionization of a 0.25M solution of hydrazine, N2H4, Kb = 1.3*10^-6.
What is the pH of 8.1 x 105 M HCIO4 solution? Is it acidic, basic or neutral? 4.09; acidic O 4.09; basic O -4.09; neutral O 9.91; basic
What is the expected pH of a 0.172M solution of Ca(OH)2(aq)? (pH is a unitless quantity.)
The active ingredient of bleach such as Clorox is sodium hypochlorite (NaClO). Its conjugate acid, hypochlorous acid (HClO), has a Ka of 3.0 × 10–8. (a)The undiluted bleach contains roughly 1 M NaClO. Calculate the pH of 1 M NaClO solution. (b)Some applications require extremely diluted bleach solution, such as swimming pools. Suppose the solution in (a) is diluted by 10,000 -fold. Calculate the pH of the diluted solution, and demonstrate that you can still neglect the autoionization of water in your calculation. (c)Suppose the solution in (a) is diluted by 1million-fold, briefly explain how your approach will be different. Write the equation with [H3O+] as the unknown, but you do not need to solve it.
The active ingredient of bleach such as Clorox is sodium hypochlorite (NaClO). Its conjugate acid, hypochlorous acid (HClO), has a Ka of 3.0 × 10–8. (a) The undiluted bleach contains roughly 1 M NaClO.Calculate the pH of 1 M NaClO solution. (b) Some applications require extremely diluted bleach solution, such as swimming pools. Suppose the solution in (a) is diluted by 10,000-fold. Calculate the pH of the diluted solution, and demonstrate that you can still neglect the autoionization of water in your calculation. (c) Suppose the solution in (a) is diluted by 1 million-fold, briefly explain how your approach willbe different. Write the equation with [H3O+] as the unknown, but you do not need to solve it.
(a) Use Table 18.a or Apendix C to calculate the Kb of the iodate ion, IO3-?
The active ingredient of bleach such as Clorox is sodium hypochlorite (NaClO). Its conjugate acid, hypochlorous acid (HClO), has a Ka of 3.0 × 10^–8. (a) The undiluted bleach contains roughly 1 M NaClO. Calculate the pH of 1 M NaClO solution. (b) Some applications require extremely diluted bleach solution, such as swimming pools. Suppose the solution in (a) is diluted by 10,000 -fold. Calculate the pH of the diluted solution, and demonstrate that you can still neglect the autoionization of water in your calculation. (c) Suppose the solution in (a) is diluted by 1 million-fold, briefly explain how your approach will be different. Write the equation with [H3O+] as the unknown, but you do not need to solve it.

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