You know the Chlorox solution is much more concentrated than the dilute solution, so you expect the amount of Chlorox required to be small. Use the roadmap we developed in the previous step. Set up the conversion factors so that all units cancel to give g Chlorox. Notice that we didn't need the 100 mL of Chlorox given in the problem at all. Since the solution is fairly dilute, though, you can assume it will have pretty much the same density as water, 1.00 g solution is about 1 mL of solution:
You need the density of the solution to do this, but the problem doesn't include the density. You want 1000 mL of solution, so connect mL solution with g solution. That connects g NaOCl with g dilute solution: The 200 ppm NaOCl means: there are 200 g of NaOCl in every 1000000 g of dilute solution.
The dilute solution will contain the same g of NaOCl as the Chlorox. Now search the given information for something that includes g NaOCl. That connects the target with g of NaOCl. The latter means, "5.25 g of NaOCl are found in 100 g of Chlorox". You know two things about the Chlorox solution: you have 100 mL, and it's 5.25% NaOCl. List the given information, and connect it with the target.Rephrase the question: How much Chlorox (5.25% NaOCl) should beĭiluted to 1000 mL to make a 200 ppm NaOCl solution? You must dilute some of the Chlorox by adding water to it. I'll assume the percent and ppm are in terms of masses, not volumes. The mechanical way (unit conversion method). That means that the mass of Chlorox that must be diluted to 1000 mL is 1/263 of 1000 g (the approximate mass of the diluted solution). Preparing a 200 ppm solution requires dilution by a factor of 200 ppm/ 5.25×10 4 ppm or 1/263.
One part per hundred is 10,000 parts per million, soĥ.25% NaOCl is 5.25×10 4 ppm. Think of percentages as 'parts per hundred'. Solve this problem either by using dilution factors or by setting up a unit conversion calculation. water and clorox) containing 200 ppm of NaOCl? How do I start? I have 100 ml of Clorox containing 5.25% NaOCl and want to make a 1000 ml of total solution (d.i. How do I prepare a solution with concentration in ppm from a solution with concentration in percent?
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