Problem: 2C2H2  +  5 O2  →  4CO2  +  2H2O  Use the given standard enthalpies of formation to calculate ∆H for this reaction C2H­2 = 227.4 CO2 = -393.5 H2O = -241.8 1256.2 kJ      b. -1256.2 kJ       c. -2512.4 kJ        d. 2512.4 kJ

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2C2H2  +  5 O2  →  4CO2  +  2H2

Use the given standard enthalpies of formation to calculate ∆H for this reaction

C22 = 227.4

CO2 = -393.5

H2O = -241.8

  1. 1256.2 kJ      b. -1256.2 kJ       c. -2512.4 kJ        d. 2512.4 kJ

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