Chemistry

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If the acetylene were burned to form water and carbon dioxide, how many kilojoules of energy would be produced from the complete reaction of 20 of calcium carbide?

CaC2(s)+2H2O(l) --> C2H2(g)+Ca(OH)2(s)

  • Chemistry -

    20 what? grams?
    dHrxn = (n*dHf products) - (n*dHf reactants)
    q for 20g = dHrxn x (20/molar mass CaC2)

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