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What is the formula of the hydrate? Solution: 1) Determine mass of water driven off: 15.67 − 7.58 = 8.09 g of water. 2) Determine moles of MgCO 3 and water: MgCO 3 ---> 7.58 g / 84.313 g/mol = 0.0899 mol H 2 O ---> 8.09 g / 18.015 g/mol = 0.449 mol.
The name of the compound is cobalt(II) chloride hexahydrate and its formula is CoCl 2 • 6H 2 O. The formula for water is set apart at the end of the formula with a dot ( •) , followed by a coefficient that represents the number of water molecules per formula unit.
30 kwi 2018 · Divide the number of moles of water lost by the number of moles of anhydrous salt to get the ratio of water molecules to formula units. In our example, 0.5 moles of water ÷ 0.1 moles copper sulfate = 5:1 ratio.
A hydrate is a compound that has a specific number of water molecules within its solid structure. For example, in its normal state, copper (II) chloride has two water molecules associated with it (blue compound). Systematic name: copper (II) chloride dihydrate. Formula: CuCl 2 · 2H 2 O.
An example of a hydrate formula is $CaCl_2$ ⋅ $2H_2O$. The dot separating the $CaCl_2$ from the two water molecules isn't a multiplication symbol. It shows that the water molecules aren't bonded to the compound, and it's therefore a hydrate.
22 wrz 2021 · Formula of a Hydrate (\(\text{Anhydrous Solid}\ce{*}x\ce{H2O}\)) The formula of a hydrate can be determined by dehydrating a known mass of the hydrate, then comparing the masses of the original hydrate and the resulting anhydrous solid.
17 cze 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 x H 2 O, where x is the number of moles of water per mole of the anhydrous salt. The hydrate is named by naming the anhydrous ...
