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Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
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Samantha B Samantha B
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11 years ago
what is the limiting reactant for the following reaction given we have2.6 moles of hcl and 1.4 of ca(oh)2 ?
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#1
11 years ago
The reaction with balanced equation is:

2HCl + Ca(OH)2 ---> H2O + CaCl2


You must multiply HCl mole values by the mole ratio bectween HCl and Ca(OH)2:
   2 HCl = 1 Ca(OH)2

So:

2.6 mol HCl X 1 Ca(OH)2 / 2 HCl = 1.3 mol Ca(OH)2 need to react completely.

Since there are 1.4 mol of Ca(OH)2 to react, Ca(OH)2 is in excess. Therefore, HCl is the limiting reactant.
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