Logarithms applications

The hydrogen ion concentration of a solution is 1 x 10^-3 M. What is the pH of the solution?

• 3

• 5

• 7

• 9

Calculate the pH of a solution with a hydrogen ion concentration of 5 x 10^-8 M.

• 7,3

• 10,3

• 9,3

• 8,3

Calculate the pH of a solution with a hydrogen ion concentration of 8 x 10^-5 M.

• 3,1

• 4,1

• 5,1

• 6,1

Complete the information :

A= 10000

M= ?

• 2

• 3

• 4

• 5

An earthquake has a wave amplitude (A) of 100 and a reference amplitude (A0) of 1. What is the magnitude of the earthquake?

• 2

• 1

• 0,5

• 5

Which of the following formulas is used to calculate earthquake magnitudes using logarithms?

Find the magnitude of an earthquake with a wave amplitude (A) of 20000

• 4,3

• 2

• 3,3

• 1,5

The hydrogen ion concentration of a solution is 4 x 10^-5 M. What is the pH of the solution

• 4,4

• 5,4

• 6,4

• 3,4

The hydrogen ion concentration of a solution is 8 x 10^-9 M. What is the pH of the solution?

• 5,1

• 6,1

• 8,1

• 7,1

Calculate the magnitud of an earthquake which amplitud was 80000

• 3

• 3,5

• 4,9

• 4