Help in chemistry. Given the 25 grams of NaCl and 35g AgNO3. Where did they get the 169.9 and 58.4 in the equation. Am I missing something.
25⋅g of sodium chloride are mixed with 35.0⋅g silver nitrate in aqueous solution. How much silver chloride can be prepared?
Oct 29, 2015
Note that I assume you are using silver nitrate, AgNO3.
Moles of Ag+, 35.0⋅g169.9⋅g⋅mol−1=??
Moles of Cl−, 25.0⋅g58.4⋅g⋅mol−1=??
The Na+(aq) and NO−3(aq) ions are spectators and do not participate in the reaction. Chloride anion is clearly in excess; precipitation AgCl is (almost) quantitative. You are free to do the math.