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First Order Reaction Concepts

First Order Reaction Concepts

Assessment

Interactive Video

Chemistry

10th - 12th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains the first order integrated rate law and its application in calculating half-life problems. It begins with an introduction to the rate law, followed by setting up a problem with given initial conditions and constants. The tutorial then demonstrates the calculation of the first half-life and verifies that the half-life remains constant in first order reactions by calculating the second half-life.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary focus of the video tutorial?

Second order reactions

Zero order reactions

First order integrated rate law and half-life

Equilibrium reactions

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which equation form is preferred when calculating the half-life in this tutorial?

The top equation

The bottom equation

The middle equation

None of the above

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial concentration of species A in the problem setup?

0.1 moles per liter

0.2 moles per liter

0.3 moles per liter

0.4 moles per liter

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the value of the rate constant k used in the problem?

7.3 x 10^-3 per second

7.3 x 10^-6 per second

7.3 x 10^-4 per second

7.3 x 10^-5 per second

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the concentration of species A after one half-life?

0.2 moles per liter

0.15 moles per liter

0.1 moles per liter

0.05 moles per liter

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the calculated half-life for the decomposition from 0.2 M to 0.1 M?

945.6 seconds

850.4 seconds

1020.3 seconds

900.0 seconds

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to the half-life when recalculated with a new initial concentration of 0.1 M?

It becomes zero

It remains the same

It halves

It doubles

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