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formula of the hydrate shows the ratio of the moles of anhydrous salt to the moles of water; in the above case, that ratio is 1:5. In this experiment, you will be given a sample of hydrate.
You weight out a 0.470-sample of hydrated nickel(II ) chloride, NiCl 2 ·xH 2 O. Upon heating, the mass of the anhydrous salt that remains is 0.256 grams. What is the formula of the hydrate? What is the name of the hydrate? Answer
Design an experiment to accurately determine the empirical formula of a given hydrate. Predict how experimental factors will impact the accuracy and precision of results. Calculate the molar ratio of water to anhydrous solid to determine the hydrate's formula.
7 Ιουν 2024 · A compound which doesn’t contain water of crystallisation is called an anhydrous compound. E.g. anhydrous copper (II) sulfate is CuSO 4. A compound can be hydrated to different degrees. E.g. cobalt (II) chloride can be hydrated by six or two water molecules. CoCl 2 ∙ 6H 2 O or CoCl 2 ∙ 2H 2 O.
The formula of the anhydrous compound was determined to be CuSO 4. Calculate the formula of the hydrated compound. Solution: 1) Assume 100. g of the hydrate is present. That means this: CuSO 4---> 74.7 g H 2 O ---> 25.3 g. 2) Change to moles: CuSO 4---> 74.7 g / 159.607 g/mol = 0.468 mol H 2 O ---> 25.3 g / 18.0 g/mol = 1.406 mol. 3) Divide by ...
17 Ιουν 2023 · A hydrate contains a definite number of water molecules bound to each ionic compound (also called the anhydrous salt). The formula of the hydrate is represented by the formula of the anhydrous salt followed by a dot and xH2O, where x is the number of moles of water per mole of the anhydrous salt.
7 Αυγ 2011 · The formula of the anhydrous salt is known, so its formula weight can be calculated. The weight of the material in the crucible after heating can then be used to determine the number of moles of the anhydrous salt. Comparing these two mole numbers gives the complete formula of the hydrated salt. Dividing the moles of water by the moles of ...
