If 32.0g cac2 are consumed in this reaction, how many moles of h2o are needed

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23-02-2017
Chemistry

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If 32.0g cac2 are consumed in this reaction, how many moles of h2o are needed

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scme1702 scme1702 · Answer 1 · 2017-03-01T21:25:04+01:00

scme1702 scme1702

01-03-2017

The reaction equation is:
CaC₂ + 2H₂O → Ca(OH)₂ + C₂H₂

Moles of CaC₂ = 32 / (40 + 12 x 2)
Moles of CaC₂ = 0.5

Molar ratio of CaC₂ to H₂O = 1 : 2
Moles of H₂O = 2 x 0.5 = 1 mole of H₂O needed

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