Question

19 A coordination compound is composed of 1936% chromnum. 31.69% NH, 13 20% chloride ion, and 35.76% sulfate ion (SO,*) by mass. (a) Determine the empirical formula for the coordination compound in the form of Cr(NHs) (So.),Cl (where x, y, and z are simple integers) The solution of this compound does not yield any precipitate when treated with AgNOs. However, when a solution that contains 1.450 g of the compound is treated with excess Ba(NO,), a white precipitate is formed. Upon filtering, washing, and drying, the precipitate yields 1.260 g of BasO.. (b) How many moles of sulfate ion (SO,2) are present in the sample? Calculate the molar mass of the compound and determine its molecular formula. (c) Assuming that all of NH are ligands, write the Werner's formula for this compound and give its systematic name.