Silver nitrate and aluminum chloride react with each other by exchanging anions: _ _ A g N O subscript 3 (a q )space plus space _ _ A l C l subscript 3 (a q )space rightwards arrow _ _ A l (N O subscript 3 )subscript 3 (a q )space plus space _ _ A g C l (s )What is the theoretical yield in grams of AgCl produced when 3.47 g of AgNO3 react with excess AlCl3? Answer to 3 significant figures. Hint: Balance equation and find required molar masses. Do not show unit, g. Do not use scientific notation.

1. for the first question, we must find the mass of the anhydrous salt, mgso₄. the molar mass for mgso₄·7h₂o is 246.47 g/mol, while that of mgso₄ is 120.37 g/mol.7.834 g mgso₄·7h₂o * 1 mol mgso₄·7h₂o/246.47 g * 1 mol mgso₄/1 mol mgso₄·7h₂o * 20.37 g mgso₄/mol = 0.647 g mgso₄

2. mass of water = mass of sample - mass of anhydrous salemass of water = 7.834 - 0.647 = 7.19 gpercent water in hydrate = 7.19/7.834 * 100 = 91.74%

bcde is the incorrect answer it is a

a). in this case, dh> 0 and sd> 0. if t becomes larger, the term "-tds" will become more negative. at some point, it is possible that -dts will be more negative than the dh is positive, and the reaction will become spontaneous. this is probably the correct answer, but you should look at all of the other possibilities and make sure of that.