Understanding Weak Bases

Understanding Weak Bases

Assessment

Interactive Video

Chemistry, Science

10th - 12th Grade

Practice Problem

Hard

Created by

Jackson Turner

FREE Resource

The video tutorial discusses weak bases, highlighting their incomplete dissociation compared to strong bases. It uses ammonia as a primary example, explaining its dissociation in water and the formation of conjugate acids and bases. The tutorial also covers the substitution of hydrogen in ammonia to form other weak bases like methylamine and dimethylamine. It provides a detailed explanation of calculating the pH of weak bases using ICE tables and equilibrium expressions, emphasizing the importance of checking assumptions in calculations.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why are weak bases designated as 'weak'?

They do not dissociate completely in water.

They are all Arrhenius bases.

They have no conjugate acids.

They dissociate completely in water.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the classic example of a weak base discussed in the video?

Sodium hydroxide

Ammonia

Sulfuric acid

Hydrochloric acid

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What ion is produced when ammonia dissociates in water?

Hydroxide ion

Hydronium ion

Sulfate ion

Chloride ion

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the conjugate acid of ammonia?

Methane

Water

Hydroxide ion

Ammonium ion

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the name of the molecule formed by substituting one hydrogen in ammonia with a methyl group?

Methylamine

Dimethylamine

Methane

Ethylamine

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the 'amine' suffix in a molecule's name indicate?

It is a strong base.

It is derived from methane.

It is derived from ammonia.

It contains a hydroxide group.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of setting up an ICE table in pH calculations?

To calculate the equilibrium concentrations of reactants and products.

To determine the initial concentration of water.

To measure the temperature of the solution.

To find the molecular weight of the base.

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