Tuesday, October 18, 2011

Question on Stoichiometry

How many grams of Calcium Chloride are formed when 1g each of Calcium and Chlorine are allowed to react completely?


Answer:


According to the following reaction 1 mole of Ca will react with 1 mole of Cl2.


Ca + Cl2 = CaCl2


1g of Ca is 1/40 moles and 1g of Cl2 is 1/71 moles. Cl2 is the limiting reagent in this reaction and will be completely consumed to produce 1/71 moles of CaCl2.


1/71 moles of CaCl2 is ((1/71) * 111)g = 1.56g

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