4 d

高中化学离子方程式知识点归纳_百度文库?

高中化学离子方程式知识点归纳_百度文库?

At room temperature, anhydrous cobalt chloride has the cadmium chloride structure (CdCl 2) (R3m) in which the cobalt(II) ions are octahedrally coordinated. At about 706 °C (20 degrees below the melting point), the coordination is believed to change to tetrahedral. The vapor pressure has been reported as 7.6 mmHg at the melting point. WebAnswer: Anhydrous cobalt chloride (CoCl2) is blue but cobalt chloride hexahydrate (CoCl2, 6H2O) is purple. So an aqueous solution of CoCl2 is purple. Now when concentrated HCl is added to an aqueous solution of CoCl2, H2O molecules of the hexadyrate CoCl2 reacts with concentrated HCl to form H3O+... 40 units of alcohol in beer WebSep 2, 2011 · What is the percentage of water in the hydrate CoCl2 6H2O? Molar Mass CoCl2 * 6H2O = 237.9 1mol CoCl2 6H2O --> 6 mol H2O 6 mol H2O * 18g/1mol = 108g H2O percent of water =108g H2O/237.9g CoCl2 ... WebSep 27, 2024 · As the complex $\ce{[CoCl4]^{2-}}$ has a dark blue color, the ethanol solution of $\ce{CoCl2·6H2O}$ is blue. But adding a few drops water, the solution turns … best hades class bo4 operator mod WebStudy with Quizlet and memorize flashcards containing terms like How many liters of HCl(g) measured at STP can be produced from 8.46 g of Cl2 and excess H2 according to the … WebJun 17, 2024 · Furthermore, the visually identifiable difference between CoCl2 6H2O and anhydrous cobalt chloride is that the CoCl2 6H2O is rose-red in color while the anhydrous cobalt chloride is sky-blue in color. … best hades loadout cod mobile WebFor instance equation C6H5C2H5 + O2 = C6H5OH + CO2 + H2O will not be balanced, but PhC2H5 + O2 = PhOH + CO2 + H2O will; Compound states [like (s) (aq) or (g)] are not required. If you do not know what products are, enter reagents only and click 'Balance'. In many cases a complete equation will be suggested.

Post Opinion