We’re being asked to determine the molarity of DDT (C14H9Cl5) in 0.10 ppm DDT in water. Let’s first define ppm and ppb.
• 1 ppm means 1 part of solute for every 106 parts of the solution
in terms of solutions:
• 1 ppb means 1 part of solute for every 109 parts of the solution
The units of parts per million (ppm) and parts per billion (ppb) are commonly used by environmental chemists. In general, 1 ppm means 1 part of solute for every 106 parts of solution. Mathematically, by mass:
ppm = μg solute / g solution = mg solute / kg solution
In the case of very dilute aqueous solutions, a concentration of 1.0 ppm is equal to 1.0 μg of solute per 1.0 mL, which equals 1.0 g solution. Parts per billion is defined in a similar fashion. Calculate the molarity of each of the following aqueous
d. 0.10 ppm DDT (C14H9Cl5) in H2O
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Our data indicates that this problem or a close variation was asked in Chemistry - Zumdahl 7th Edition. You can also practice Chemistry - Zumdahl 7th Edition practice problems.