[1] (a) Phenol, a general disinfectant, has the composition 76.57% C, 6.43% H, and 17.00% O...
[1] (a) Phenol, a general disinfectant, has the composition 76.57% C, 6.43% H, and 17.00% O by mass. Determine its empirical formula? (CSLO 1, Application) Marks 1 [1] (b) 2.8g of iron was heated with excess sulfur to form iron sulphide. The excess Sulphur was dissolved in a solvent and the iron sulphide filtered off, washed with clean solvent and dried. If 4.19 of purified iron sulphide was finally obtained, what was the % yield of the reaction? [Relative atomic masses: Fe =56, S = 32] (CSLO 1, Application) Marks = 1 Fe + S ==> Fes