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Mol Wt of HCl = 36.461 G/Mole = 36.46 G HCl/Liter

0.2 X 36.461 = 7.2922 Grams HCl/Liter

Since HCl is fuming hydrochloric acid, this would be most difficult to weigh out, so doing it volumetrically is probably a more practical way of doing it. Typical Reagent Grade HCl, called fuming hydrochloric acid, is 36% HCl and has a density of 1.179 g/mL

So 7.2922 Grams HCl X 1.179 Grams/mL = 8.597 mL HCl

So the practical way to do this would be to add some water, perhaps 200 mL, to a 1 Liter Class "A" volumetric flask, then slowly add approximately 8.6 mL of 36% reagent grade HCl.

Swirl the flask and continue to add distilled water to the meniscus.

This is how you would make it up in a lab. Afterwards, you would do a titration against 0.1 N NaOH and do a calculation to determine if you need to adjust the HCl for slight errors. You would then use the corrected N value (normality or Molarity) in using the reagent.

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