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Polyprotic Acid

Q. Write the equilibrium equation associated with Ka3 for H3PO4? Express your answer as a chemical equation. Identify all of the phases in your answer.

Solved • Feb 23, 2020

pH and pOH

Q. The temperature for each solution is carried out at approximately 297 K where Kw = 1.00 x 10^-14. 0.80 g of sodium hydroxide (NaOH) pellets are dissolved in water to make 4.0 L of solution. What is the pH of this solution? Express the pH numerically to two decimal places.

Solved • Feb 23, 2020

Le Chatelier's Principle

Q. The following diagrams (Figure 1) represent aqueous solutions of two monoprotic acids, HA (A = x or Y). The water molecules have been omitted for clarity. If you mix equal concentrations of HX and NaY, will the equilibrium HX(aq) + Y^-(aq) ⇌ HY(aq) + X^-(aq) lie mostly to the right (Kc> 1) or to the left (Kc< 1)?

Solved • Feb 23, 2020

Identifying Acids and Bases

Q. The following diagrams (Figure 1) represent aqueous solutions of two monoprotic acids, HA (A = x or Y). The water molecules have been omitted for clarity. Which is the stronger base, X^- or Y^-?

Solved • Feb 23, 2020

Identifying Acids and Bases

Q. The following diagrams (Figure 1) represent aqueous solutions of two monoprotic acids, HA (A = x or Y). The water molecules have been omitted for clarity. Which is the stronger acid, HX or HY?

Solved • Feb 23, 2020

Weak Bases

Q. Write the chemical equation and the Kb expression for the reaction of each of the following bases with water. Write the chemical equation for the reaction of monohydrogen phosphate ion, HPO4^2- with water. (Include all phases in your answer)

Solved • Feb 23, 2020

Weak Bases

Q. Write the chemical equation and the Kb expression for the reaction of each of the following bases with water. Write the chemical equation for the reaction of propylamine, C3H7NH2 with water. (Include all phases in your answer)

Solved • Feb 23, 2020