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A weak acid has Ka equals 0.0003887 What is the pH of a solution of this acid when HA equals 10.92 mM and A - equals 8.07 mM?
pH = -log10(Ka) - log10([HA]/[A-]) = 3.41 -log10(1.35) = 3.41 - 0.1313 = 3.28
A line of reasoning showing more steps is: By definition, Ka = [H+][A-]/[HA], where the brackets indicate molar concentrations. Dividing both sides of this equation by [A-]/[HA] and substituting the numerical values given results in [H+] = (10.92 X 10-3)(3.887 X 10-4)/(8.07 X 10-3) = 5.260 X 10-4. The log of 5.260 =0.7210, so the pH of this solution is - (-4 - 0.7210) = 3.28, to the justified number of significant digits (limited by 8.07).
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A 0.12M solution of an acid that ionizes only slightly in solution would be termed?
It would be named as a dilute solution of a weak acid.
Does diluting an acid give a more concentrated solution?
no it doesn't.dissolving or making a solution of an acid makes a more dilute solution of the acid.
How much acid is in 320 mL of a 15 percent acid solution?
There are 48 mL of acid in 320 mL of a 15% acid solution. This is calculated by multiplying the volume of the solution by the percentage of acid in the solution: 320 mL x 0.15 = 48 mL.
One gallon of muriatic acid equals how many pounds of dry acid?
One gallon of muriatic acid weighs approximately 9 pounds, and it typically contains about 31-38% hydrochloric acid. To calculate the weight of dry acid in one gallon of muriatic acid, you would need to consider the concentration of hydrochloric acid in the solution.
How much pure acid must be added to 12 ounces of a 40 percent acid solution in order to produce 60 percent acid solution?
To find the amount of pure acid to add, set up an equation based on the amount of acid in the original solution and the final solution. Let x be the amount of pure acid to add. The amount of acid in the original solution is 0.4 × 12 = 4.8 ounces. The amount of acid in the final solution is 0.6 × (12 + x) = 4.8 + 0.6x ounces. Therefore, to get a 60% acid solution, you would need to add 10.67 ounces of pure acid.
What is the mole fraction of sulfuric acid in a solution made by adding 3.4 grams of sulfuric acid to 3500 mL of water?
The mole fraction must be calculated in moles solvent over moles solution. So, 3.4 grams sulfuric acid equals .0347 moles sulfuric acid. 3500 mL water equals 3500 g water equals 194 mols. .0347 mols/(.0347+194) = 1/5591.77 mols/mol
If you have a solution of a strong acid and a solution of a week acid of equal concentration and volume then the?
pH of the strong acid solution will be lower than the pH of the weak acid solution due to the stronger dissociation of the strong acid.
Ammonia plus acid equals?
Ammonia reacts with an acid to form ammonium ions and water. The reaction between ammonia and an acid is typically used in chemical processes to neutralize the acidity of the solution.
At a pH of 7 what is true a The hydroxide ion concentration equals the hydronium ion concentration b The concentration of the acid equal the concentration of the conjugate base?
At a pH of 7, both statements are true. The hydroxide ion concentration equals the hydronium ion concentration in a neutral solution with pH 7. Additionally, in a neutral solution, the concentration of the acid equals the concentration of the conjugate base since the solution has an equal balance of H+ and OH- ions.
What is the name of an aqueous solution of HF?
The name of HF in solution is hydrofluoric acid.
A chemist is making 200 L of a solution that is 62 percent acid He is mixing an 80 percent acid solution with a 30 percent acid solution How much of the 80 percent acid solution will he use?
The chemist will use 100 liters of the 80% acid solution and 100 liters of the 30% acid solution to make a 200-liter solution that is 62% acid. The amount of acid in the 80% solution will be 0.8 * 100 = 80 liters, and in the 30% solution, it will be 0.3 * 100 = 30 liters.
A 0.12M solution of an acid that ionizes only slightly in solution would be termed?
It would be named as a dilute solution of a weak acid.
How do you write nitrous acid in solution?
Nitrous acid in solution can be written as HNO2(aq).
How does the presence of an acid in a water solution affect of the pH of the solution?
The presence of an acid lowers the pH of the solution in water.
A chemist has one solution that is 80 percent acid and another solution that is 30 percent acid How much of the first 80 percent solution is needed to make a 400 L solution that is 62 percent acid?
To create a 400 L solution that is 62% acid, you would need 200 L of the 80% acid solution and 200 L of the 30% acid solution. This would result in a final solution with the desired concentration.
Does diluting an acid give a more concentrated solution?
no it doesn't.dissolving or making a solution of an acid makes a more dilute solution of the acid.
Is a weak acid similar to a dilute acid?
A weak acid refers to the extent to which the acid dissociates in a solution, while a dilute acid refers to the concentration of the acid in a solution. Therefore, they are not the same but can be related in the sense that a weak acid may be present in a dilute solution.
