Calculate the standard enthalpy of formation for acetylene (c2h2) from the elements: 2c (graphite) + h2 (g) > c2h2 (g) the equations for each step and the corresponding enthalpy changes are:
a. c (graphite) + o2 (g) > co2 (g) δrh° = - 393.5 kj
b. h2 (g) + 1/2 o2 (g) > h2o (l) δrh° = - 285.8 kj
c. 2c2h2 (g) + 5o2 (g) 4co2 (g) + 2h2o (l) δrh° = - 2598.8 kj
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The reactions shown here can be combined to make the overall reaction c(s) + h2o(g) ⇌ co(g) + h2(g) by reversing some and/or dividing all the coefficients by a number. a. c(s) + o2(g) → co2(g) k=1.363×10^69 b. 2 h2(g) + o2(g) → 2 h2o(g) k=1.389×10^80 c. 2co(g) + o2 (g) → 2 co2(g) k=1.477×10^90
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Calculate the standard enthalpy of formation for acetylene (c2h2) from the elements: 2c (graphite)...
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