Concept 5 Notes - Describing HONORS

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​5

Multiple Choice

Which of the following statements best describes a strong acid or base?

• It ionizes or dissociates completely in an aqueous solution.

• It does not ionize at all in water.

• It only partially ionizes in water.

• It forms no ions in water.

Open Ended

Why is the strength of an acid or base important in chemistry?

Multiple Choice

Which of the following statements best describes a weak acid?

• A weak acid releases a few hydrogen ions in water and does not ionize completely.

• A weak acid releases all of its hydrogen ions in water and ionizes completely.

• A weak acid does not release any hydrogen ions in water.

• A weak acid increases the pH of a solution significantly.

Multiple Choice

Which of the following substances would have the lowest pH value?

• Battery acid

• Milk

• Soap

• Baking soda

Fill in the Blank

Chemical indicators show different colors to indicate different ___ values.

Multiple Select

Which of the following statements are correct regarding the pH scale?

• A pH of 7 is neutral.

• A pH below 7 is acidic.

• A pH above 7 is alkaline.

• A pH of 0 is the most basic.

Open Ended

Given a solution with [H3O+] = 0.01 M, calculate its pH and determine if it is acidic or basic.

Multiple Choice

Which of the following statements best describes the relationship between pH and pOH?

• As pH increases, pOH decreases.

• As pH increases, pOH increases.

• pH and pOH are always equal.

• pH and pOH are unrelated.

Fill in the Blank

The sum of pH and pOH in a solution at 25°C is always ___

.

Multiple Select

Which of the following equations are correct based on the relationship between pH, pOH, and [OH-]?

• pOH = -log[OH-]

• [OH-] = 10^-pOH

• pH + pOH = 14.0

• pOH = log[OH-]

​Complete ALL!!!

​Complete Even ONLY!!!

Open Ended

How does the polarity of a substance affect its strength as an acid or base?

Multiple Choice

What is the main difference between a strong acid or base and a weak acid or base?

• A strong acid or base ionizes or dissociates completely, while a weak one does not.

• A strong acid or base has a higher pH than a weak one.

• A strong acid or base is always more dangerous than a weak one.

• A strong acid or base is always a solid, while a weak one is a liquid.