Acid-Base Reactions and pH Calculations

Acid-Base Reactions and pH Calculations

Assessment

Interactive Video

Created by

Sophia Harris

Chemistry, Science

10th - 12th Grade

Hard

06:28

The video tutorial explains the reaction between ammonia, a weak base, and hydrochloric acid, a strong acid, forming ammonium chloride. It covers writing complete and net ionic equations, identifying spectator ions, and analyzing three scenarios: equal moles of reactants, excess weak base, and excess strong acid. The tutorial discusses the resulting pH in each case, emphasizing the role of hydronium ions and the common ion effect, and introduces the Henderson-Hasselbalch equation for buffer solutions.

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10 questions

Show all answers

1.

MULTIPLE CHOICE

30 sec • 1 pt

What type of reaction occurs when ammonia reacts with hydrochloric acid?

2.

MULTIPLE CHOICE

30 sec • 1 pt

In the complete ionic equation for the reaction between ammonia and hydrochloric acid, which ion is not shown?

3.

MULTIPLE CHOICE

30 sec • 1 pt

What is the role of chloride ions in the reaction between ammonia and hydrochloric acid?

4.

MULTIPLE CHOICE

30 sec • 1 pt

Which ion can be used interchangeably with H+ in the net ionic equation?

5.

MULTIPLE CHOICE

30 sec • 1 pt

What is the pH of the solution when equal moles of weak base and strong acid are mixed?

6.

MULTIPLE CHOICE

30 sec • 1 pt

When the weak base is in excess, what type of solution is formed?

7.

MULTIPLE CHOICE

30 sec • 1 pt

What happens to the leftover ammonia in a solution where the weak base is in excess?

8.

MULTIPLE CHOICE

30 sec • 1 pt

In a buffer solution, what is the relationship between the weak acid and its conjugate base?

9.

MULTIPLE CHOICE

30 sec • 1 pt

What is the pH of the solution when the strong acid is in excess?

10.

MULTIPLE CHOICE

30 sec • 1 pt

Why can the contribution of ammonium cations be ignored when the strong acid is in excess?

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