Concept explainers
Interpretation:
Concept Introduction:
A weak acid in water produces a hydrogen ion and conjugate base. When weak acid dissolves in water, some acid molecules transfer proton to water.
In solution of weak acid, the actual concentration of the acid molecules becomes less because partial dissociation of acid has occurred and lost protons to form hydrogen ions.
The reaction is as follows:
The reaction is as follows:
The expression for
Negative logarithm of molar concentration of hydronium ion is called
The relation between
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Chemistry: Principles and Practice
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- During the fermentation of wine, a buffer system consisting of tartaric acid and potassium hydrogen tartrate is produced by a biochemical reaction. Assuming that at some time the concentration of potassium hydrogen tartrate is twice that of tartaric acid, calculate the pH of the wine. The pKa of tartaric acid is 2.96.arrow_forwardHousehold bleach is prepared by dissolving chlorine in water. Cl2 (g) + H2O « H+ (aq) + Cl- (aq) + HOCl Ka for HOCl is 3.2 x10-8 . How much chlorine must be dissolved in one liter of water so that the pH of the solution is 1.19? Caproic acid HC6H11O2 is found in coconut oil and is used in making artificial flavors. A solution is made by dissolving 0.450mol of caproic acid in enough water to make 2.0L of solution. The solution has [H+] 1.7 x 10-3 M. what is Ka for caproic acid? Phenol, once known as carbolic acid, HC6H5O, is a weak acid. It was one of the first antiseptics used by Lister. Its Ka is 1.1 x 10-10. A solution of phenol is prepared by dissolving 14.5g of phenol in enough water to make 892mL of solution. For this solution, calculate the pH HC3H5O3, is found in sour milk. What is the pH of 0.30M lactic acid? Ka=1.4 ' 10-4arrow_forwardGiven the pKa of hypochlorous acid, HOCl, is 7.54. What is the pH of a solution which consists of 0.20 M HOCl and 0.70 M OCl-?arrow_forward
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