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Title: when heated lithium reacts with nitrogen to form lithium nitride. What is the % yield of the reaction if 13.4g? Post by: buffnstuff on Jan 12, 2012 of lithium is heated with 34.8g of N2 and the actual yield Li3N is 7.00g? Please also show me how to do it because I have no clue.. Thanx a lot
Title: when heated lithium reacts with nitrogen to form lithium nitride. What is the % yield of the reaction if 13.4g? Post by: buffet55 on Jan 12, 2012 3Li + N2 -> 2Li3N
no. of mol of N2 = 34.8/28 = 1.24 mol no. of Li = 13.4/7 = 1.91 mol Li is limiting reagent theoretical yield = 2/3 * 1.91 = 1.27 mol of Li3N % yield = 7/(1.27*(21+14) * 100% = 22% |