By what factor will the rate of the reaction change if the ph decreases from 5.50 to 2.00? express your answer numerically using two significant figures.

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Mathematics

2 April, 00:56

By what factor will the rate of the reaction change if the ph decreases from 5.50 to 2.00? express your answer numerically using two significant figures.

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Leslie James · Answer 1

PH is a scale which measures the acidity or alkalinity of a solution. It ranges from a level of 1 to 14. A pH which range from 1 to 6 represents an acidic substance. At pH of 7, signifies the solution is neutral. And at a pH of 8-14 represents a basic solution. pH is expressed as the negative logarithm of the concentration of hydronium ions. To determine the factor of how the pH will change, we use the definition of the pH.

pH = - log [H+]

5.50 = - log [H+]

[H+] = 10^-5

2.00 = - log [H+]

[H+] = 10^-2

10^-5 / 10^-2 = 0.001

The rate of reaction would change by a factor of 0.001 as the pH change from 5.5 to 2.0