Summary of the results and discuss the results of the new bulletin prepared black project. From the results of the experiment are as follows: 1. when the vinegar mixed with lemon juice pH is equal to 4.0. 2. to apply lemon juice mixed with pineapple juice to pH equal to 3.0. 3. when the water sense mixed with pineapple juice will equal 4.5 pH. Show that when mixed with water, lemon juice, pineapple come to find out that a higher acid value. Lemon juice mixed with vinegar and orange juice mixed with pineapple juice. We also found that when the fruit of the combination of these three types of soluble salts down to fill the coin has stains used to set the time for about 30 minutes later, 30 minutes to bring the coins out of clear water found that coin is in the water, mixed wood with a pH as high as much of Miami cleaned because the acid milieu is the concentration of the most corrosive, respectively, the concentration of the acid.
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