6. Derive the equation for the dependence of the thermal effect of the reaction CH4(g)=C(g) 2H2(g) on temperature, and also calculate the thermal effect of this reaction at 1000 K, if its value under standard conditions is 74.85 kJ, and the molar heat capacity reagents are:
СрС=11.19 10.95*10-3Т-4.89*105Т-2 J/mol*deg
СрН2=27.28 3.26*10-3Т 0.502*105Т-2 J/mol*deg
СрСН4=17.45 60.46*10-3Т 1.12*10-6Т2 J/mol*deg

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