What Is the [A−]/[HA] Ratio When the Weak Acid Is

question 30

Multiple Choice

What is the [A−]/[HA] ratio when the weak acid is in a solution one pH unit above its pK_a?

• A) 1:1
• B) 1:10
• C) 10:1
• D) 2:1
• E) None of the above.

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Definitions:

Progressive Tax System

A tax system where the tax rate increases as the taxable amount or income increases, effectively imposing a higher percentage rate on those who earn more.

Regressive Tax

A tax system where the tax rate decreases as the taxable amount increases, placing a higher burden on lower-income earners relative to their income.

Income Groups

Categories of people classified according to the level of their income, often used in socio-economic and market research to analyze spending habits, needs, and trends.

Lump-Sum

A single payment made at a particular time, as opposed to a series of smaller payments or installments.