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CH4 + H2O = CO + 3H2, ¡÷H = 206.3KJ/mol (1)
CH4 + CO2 = 2CO+ 2H2, ¡÷H = 247.3KJ/mol (2)
CH4 + 1/2O2 = CO + 2H2, ¡÷H = -35.6KJ/mol (3)
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