1. A 0.109 M aqueous solution of an unknown acid has a pH of 4.846. Calculate its Ka.
2. How would you change the volume of each of the following reactions to increase the yield of the products?
a) CaCO3 (s) CaO (s) + CO2 (g)
b) S (s) + 3 F2 (g) SF6 (g)
1. A 0.109 M aqueous solution of an unknown acid has a pH of 4.846. Calculate...
1. An aqueous solution contains 0.395 M hydrocyanic acid. Calculate the pH of the solution after the addition of 5.99×10-2 moles of sodium hydroxide to 255 mL of this solution. (Assume that the volume does not change upon adding sodium hydroxide) pH = 2. An aqueous solution contains 0.302 M acetic acid. Calculate the pH of the solution after the addition of 2.56×10-2 moles of potassium hydroxide to 125 mL of this solution. (Assume that the volume does not change...
1. An aqueous solution contains 0.395 M hydrocyanic acid. Calculate the pH of the solution after the addition of 5.99×10-2 moles of sodium hydroxide to 255 mL of this solution. (Assume that the volume does not change upon adding sodium hydroxide) pH = 2. An aqueous solution contains 0.302 M acetic acid. Calculate the pH of the solution after the addition of 2.56×10-2 moles of potassium hydroxide to 125 mL of this solution. (Assume that the volume does not change...
A 0.165-M aqueous solution of a weak acid has a pH of 2.59. Calculate Ka for the acid. Ka =
A 0.134-M aqueous solution of a weak acid has a pH of 4.8. Calculate Ka for the acid. Ka =?
a) An aqueous solution contains 0.421 M nitrous acid. Calculate the pH of the solution after the addition of 5.79×10-2 moles of sodium hydroxide to 255 mL of this solution. (Assume that the volume does not change upon adding sodium hydroxide) b) An aqueous solution contains 0.421 M nitrous acid. Calculate the pH of the solution after the addition of 5.68×10-2 moles of sodium hydroxide to 250 mL of this solution. (Assume that the volume does not change upon adding...
The pH of a 0.60 M aqueous solution of an unknown acid is 2.98. What is the value of Ka for the acid? A. 0.22 B. 1.8 x 10-5 C. 6.0 x 10-5 D. none of the above O E. 1.8 x 10-4
A 0.228-M aqueous solution of a weak acid has a pH of 4.61. Calculate Ka for the acid.
1. In a 0.200 M solution of an unknown acid, the pH is 5.004. Calculate the Ka for this monoprotic acid 2. A 500.0 mL solution of HCl has a pH of 4.50. How many grams of HCl are there in this solution? The molar mass of HCl is 36.5g/mol. 3. Calculate the pOH of a 0.20 molar solution of NaOH.
A 0.25 M aqueous solution of a weak monoprotic acid has a pH of 3.37. Calculate the Ka of this weak acid.
The pH of a 0.14 M solution of an unknown weak acid is 5.85. Calculate the Ka of the acid.