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Suppose 1.1854g of copper(II) sulfate pentahydrate is heated to drive off the water of crystallization. Calculate what mass of water would be expected to be released from the salt.

Respuesta :

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1) Copper(II) sulfate pentahydrate formula

CuSO4.5H2O

2) Molar mass, MM

63.55g/mol + 32.07g/mol +4*16g/mol + 5*18g/mol = 249.62 g/mol

3) Proportion of water in the molecule of CuSO4.5H2O

18.0 g H2O / 249.62 g CuSO4.5H2O

4) Water in 1.1854 g of CuSO4.5H2O

1.1854 gCuSO4.5H2O * [18.0 gH2O / 249.62 gCuSO4.5H2O] = 0.08548  gH2O

Answer: 0.08548 g

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