chemistry question?

1 ⤊

what is the exess reagent for the following reaction given we have 2.6 moles of HCl and 1.4 moles of Ca(OH)2? Reaction: 2HCl + Ca(OH)2>>>>2H2O + CaCl2

2007-04-26 18:21:25 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry

2 answers

You need two moles of HCl for every mole of Ca(OH)2

So if you have 1.4 moles of Ca(OH)2 then you would need 2.8 moles of HCl and you only have 2.6.

Therefore, the Ca(OH)2 is in excess.
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2007-04-26 18:27:14 · answer #1 · answered by Ferts 3 · 1⤊ 0⤋

The excess reagent is the reagent that does not limit the products of the reaction. Here, if we had only1.3 moles of the hydroxide, it would completely be neutralized by all the acid that was provided. Since we have more, the Ca(OH)2 is in excess.

2007-04-27 01:30:38 · answer #2 · answered by cattbarf 7 · 0⤊ 0⤋