27.(14分)
(1)CaC2 + 2H2O→C2H2↑+Ca ( OH )2 (2分)
C2H2 ( g ) + 5/2O2 ( g ) == 2 CO2 ( g ) + H2O ( 1 ) ; △H = ?1300kJ?mol?1 (2分)
(2)漂白粉 (2分)
CO2 + H2O + Ca ( ClO )2 == CaCO3 + 2HClO (2分)
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27.(14分)
(1)CaC2 + 2H2O→C2H2↑+Ca ( OH )2 (2分)
C2H2 ( g ) + 5/2O2 ( g ) == 2 CO2 ( g ) + H2O ( 1 ) ; △H = ?1300kJ?mol?1 (2分)
(2)漂白粉 (2分)
CO2 + H2O + Ca ( ClO )2 == CaCO3 + 2HClO (2分)
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