A sample of hydrated barium chloride (BaCl2) has a mass of 8.26 g. After dehydration, the...

A sample of hydrated barium chloride (BaCl2) has a mass of 8.26 g. After dehydration, the anhydrous sample has a mass of 7.04 g. What is the correct name for the hydrate

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Expert Solution

Hydrated barium chloride is BaCl2.XH2O is 8.26 gm

Anhydrous barium chloride BaCl2 is 7.04 gm

Mass of water =mass of hydrated barium chloride is BaCl2.XH2O -mass of anhydrous barium chloride BaCl2

= 8.26-7.04 = 1.22 gm

no of moles of water = weight of water/ gram molar mass of water

= 1.22/18 =0.068 moles of water

molar mass of Bacl2 = 1*137+ 2835.5 = 208

no of moles of anhydrous BaCl2 = 7.04/208

= 0.0338 moles of BaCl2

find the moles water to BaCl2 = 0.068/00338 = 2 moles Water/ 1 mole BaCl2

correct hydrated Bacl2 formula is BaC2.2H2O

dihydreted barium chloride(BaCl2)>>>>> answer

queen_honey_blossom answered 1 year ago

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