Classify the following compound as an acid, base, or salt, and write its name: H₂TeO₃, whose polyatomic anion inhibits oxidation of a biological substrate.

Provide the distinction between a monoprotic acid and diprotic acid. Determine whether the acids listed below are monoprotic or diprotic: 

(i) Hydrocyanic acid (HCN)

(ii) Tartaric acid (H₂C₄H₄O₆)

Fill in the blanks for the following statements.

Choices: HBr, H₃PO₄,  2, 1, CH₃NH₂, HClO, HCOOH, HCN, 3, KOH, Sr(OH)₂, H₂SO₄

Strong acids can be identified as

• Hydrophilic acids such as ___
• Oxyacids with ___ or more oxygen atoms than the number of ionizable protons such as ___

Weak acids can be identified as

• Hydrofluoric acid
• Acids with no oxygen nor halogen atom such as ___
• Oxyacids with ___ less or equal number of an oxygen atom to the number of ionizable protons such as ___
• Carboxylic acids such as ___

Strong bases can be identified as

• Hydroxides of group ___ metals such as ___
• Hydroxides of group ___ metals such as ____
• Oxides of the same metals

Weak bases can be identified as

• Nitrogen atoms that have ___ bond(s) and ___ lone pair(s) such as

Identify which of the following representations is for a solution of strong Arrhenius monoprotic acid (HA) and which is for a solution of strong Arrhenius diprotic acid (H₂A).

I.

II.

Give the balanced chemical equation that shows HCOOH as an acid according to the Arrhenius definition.

Explain what happens when benzoic acid (C₆H₅COOH) is dissolved in water. Note that benzoic acid is a weak acid.

Identify the statement that correctly describes the reaction

HCN (aq) + PH₃(aq) → PH₄⁺(aq) + CN^- (aq)

Using the table provided, determine which of the following acids is stronger: H₂CO₃ or HCl?

The following figure shows the electrostatic potential maps of the molecules CH₃COOH and CF₃COOH. Determine the most acidic hydrogen in each molecule. Compare their acidity and identify which is expected to be a stronger acid between the two.

The three acids are arranged in decreasing acid strength

HB > HA > HC

What is the decreasing order in terms of strength for their conjugate bases?

Derive an equation to solve for [H₃O⁺] in an aqueous solution of hydrofluoric acid (HF). Hint: Start with K_a.

Rio Tinto is a highly acidic river in southwestern Spain. This river has an average pH of 2.00. What are the [H₃O⁺] and the [OH⁻] of the river?

Provide the missing data for bleach in the following table:

At 25°C, An aqueous solution in a beaker has [OH^-] = 8.97x 10^-2M. Which statement about the solution is true?

I. The solution has [H₃O⁺] = 1.11x10^-13 M

II. The solution has a pH of 1.05

III. The solution is basic.