Biology 12th Edition

Published by McGraw-Hill Education
ISBN 10: 0-07802-426-9
ISBN 13: 978-0-07802-426-9

Chapter 2 - Basic Chemistry - Assess - Page 34: 15

Answer

The correct option is (b) the solution is 100 times more basic.

Work Step by Step

Since pH level is measured in logarithmic scale, each of the pH value below 7 is ten times more acidic than the next higher value. For example, the pH value 3 is ten times more acidic than pH 4. So, when the pH value changes from 5 to 6, the solution becomes 10 times more basic. Further, when the solution changes from pH 6 to 7 it becomes 10 times more basic again. So overall solution becomes 100 times more basic than the original solution when pH changes from 5 to 7.
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