Αποτελέσματα Αναζήτησης
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
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.
22 Σεπ 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.
After heating, the mass of the anhydrous compound is found to be 3.22 g. Determine the formula of the hydrate and then write out the name of the hydrate. Solution: 1) Determine mass of water driven off: 4.31 − 3.22 = 1.09 g of water. 2) Determine moles of Na 2 CO 3 and water: Na 2 CO 3---> 3.22 g / 105.988 g/mol = 0.0304 mol
7 Ιουν 2024 · The water of crystallisation is separated from the main formula by a dot when writing the chemical formula of hydrated compounds. E.g. hydrated copper (II) sulfate is CuSO 4∙ 5H 2 O. A compound which doesn’t contain water of crystallisation is called an anhydrous compound. E.g. anhydrous copper (II) sulfate is CuSO 4.
21 Νοε 2023 · What Is a Hydrated Compound? Hydrate Formula. How to Find the Formula of a Hydrate. Difference Between a Hydrate and an Anhydrate Compound. Lesson Summary. FAQs. Activities. What is the...
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 ...
