Question

Put it together: Acetylene, C2H2, is a gas commonly used in welding. It is formed in the reaction of CaC2, with water. Given the thermochemical equations below, calculate the value of AH for acetylene. NOTE: This doesn't give you the equation you are shooting for -you must come up with that on your own. Notice the word formation. 2.30 J CaO(s)+H20 Ca(OH)26s) AH°=-65.3 kJ/mole AH°=+462.3 kJ/mole CaO()+3 Cs)CaC2(s)+COe) AHO+178 kJ/mole CACO 3()CaO) +CO2(e CaC2(0)+2H2Om) Ca(OH)2)C2H2 AH-126 kJ/mole AHO-220 kJ/mole 2C19) 4%GU21a) > 2C6() AHo=+572 kJ/mole 2H2O 2 H2+Ole 2 C es)H2)

Answer 1

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by adding z+Y62-3 te K3ate Cao Cals Calan'n 3C Calebn)y t Cyr,AH- 6 dlo +65.3 5t AH Ct Ha 2n 988- get Ho fermaation of 44 (Enthalpy as +462-3 KZ+(-126) mic n.le Kme Tole (-286) TlO Sa K 23a 22 6 rte 4H