Hydrochloric Acid and pH Concepts

Hydrochloric Acid and pH Concepts

Assessment

Interactive Video

Chemistry

10th - 12th Grade

Hard

Created by

Jackson Turner

FREE Resource

The video tutorial explains how to determine the pH of concentrated hydrochloric acid (HCl). It begins by discussing the properties of HCl, noting that it is a strong acid that dissociates completely in water. The tutorial highlights that concentrated HCl is 37% HCl by weight and has a molarity of 12 moles per liter. The pH is calculated using the formula pH = -log[H+], resulting in a pH of -1.1, indicating a very strong acid. The video concludes by summarizing the steps to find the pH of concentrated HCl.

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9 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary question addressed in the video?

How to calculate the molarity of a solution

What is the pH of concentrated hydrochloric acid

How to dilute hydrochloric acid

What are the uses of hydrochloric acid

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What ions does hydrochloric acid dissociate into?

Na+ and Cl-

H2O and Cl-

OH- and Cl-

H+ and Cl-

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What percentage of concentrated hydrochloric acid is actually HCl?

50%

25%

100%

37%

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is molarity important when determining the pH of a solution?

It helps in calculating the pH

It indicates the strength of the solution

It shows the temperature of the solution

It determines the color of the solution

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the molarity of the concentrated hydrochloric acid mentioned in the video?

10 M

12 M

15 M

8 M

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is the pH of a solution calculated?

By taking the square root of the molarity

By adding the molarity to the concentration

By multiplying the molarity by the concentration

By taking the negative logarithm of the hydrogen ion concentration

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the pH of the concentrated hydrochloric acid as calculated in the video?

-1.1

1

2

0

8.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Why is the pH of concentrated hydrochloric acid negative?

Because it is a base

Because it is diluted

Because it is a weak acid

Because it is a very concentrated solution

9.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the significance of the negative pH value?

It shows a very strong acidic solution

It means the solution is basic

It has no significance

It indicates a neutral solution