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santileiva123199
23.07.2019 •
Chemistry
Calculate the molarity and normality of 5.7 g of ca(oh)2 in 450 ml of solution.
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Ответ:
molarity = moles/volume in liters
moles =mass/molar mass
= 5.7g/74g/mol = 0.077moles
molarity = 0.077/450 x1000= 0.17M
Normality = equivalent point x molarity
equivalent point of Ca(OH)2 is 2 since it has two Hydrogen atom
normality is therefore = 0.17 x2 = 0.34 N
Ответ:
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