Question

Part A After 0.64g of CoCl2 6H2O is heated, the residue has a mass of 0.32 g . Calculate the % H20 in the hydrate. ΑΣΦ H20 Submit Request Answer Part B What was the actual number of moles of water per formula unit CoCl2? ΑΣΦ

just write the answers.

Answer 1

Sol- 0.64 - 0-3.79 mass of Substance used in mocion = 0.329 :: mass of Hy0 = 0-329. mole of H, 0 = 0.32 - 0.0177 moke mole of coll = 0.32 = 0.002 18 7.3 oratio = 0.0177 - 0.0024 the formule will be Collg. 740. Sol = the actual number of moes of water pes unit formula unit Goal = 6 Octual formula : Coll. 6460 Sol Molarity of Noz PO, = 0.1 93 M. molarity of culle = 0.116M volume of coch = 88.1 ml Volume of Naz pou = ? fecom formula .M.U M₂ V2 vi - M2V2 - 0.116 x 88.1 M 0.193. 10.21 – 52.94ml 52.94 ml of NO 3P0u required 0-193 = 52.94 ml