solve it completely. answer should be correct and accurate. i will rate u

1. A mixture of high-temperature gases flows over a horizontal graphite slab. Some of the species H2O(g), CO2, H2g, in the mixture can react with graphite surface by heterogeneous reaction and cause thermochemical ero- sion of the solid. Consider the following heterogeneous reactions: H2O + C CO + H2 CO + C 200) (2) H + 2C CH2) (3) Determine the heats of reaction of the above three reactions at 2000 K. Are these reactions exothermic or endothermic