# Solution to Exercise 7-2-4

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The ratio of base to acid is 40/30, or 1.33

log 1.33 = 0.125

pH = 4.8 + 0.125 = 4.9 (to two significant figures)

Solution to Exercise 7-2-4 is shared under a not declared license and was authored, remixed, and/or curated by .

Solution to Exercise 7-2-4 is shared under a not declared license and was authored, remixed, and/or curated by Tim Soderberg.