A student mixed a cobalt cloride solution with a potassium arsenate solution a solid was observed. How many grams of solid can be formed from mixing 35.6mi. of 0.342 M cobalt chloride solution with 35.8 ml. of .251 M potassium arsenate solution? Which reactant is in excess and by how many milliliters? Which substance is the limiting reactant?
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Expert's answer
2012-11-23T02:53:25-0500
n of CoCl2--? in excess(0.01218-0.00899/2 = 0.007685 mol (22.46 ml))
0.342mol - - - 1000ml x mol -- --- ----------35.6ml
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