What is `Delta_(r)H` for `CH_(4(g))+20_(2(g))to CO_(2(g))+2H_(2)O(l)` in terms of molar enthaples of the respective reaction and products?

2H_(2(g)) + O_(2(g)) rarr 2H_(2)O_((l)) , DeltaH= -ve and DeltaG= -ve . Then the reaction is

H_((aq))^(+) + OH_((aq))^(-) rarr H_(2)O_((l)) , Delta H = -ve and Delta G= -ve then the reaction is

C _((s)) + O _(2 (g)) to CO _(2(g)) ,Delta H =-393.5kJ. This equation can not represent

For the following three reactions a, b and c equilibrium constant are given a) CO_((g))+H_2O_((g)) harr CO_(2(g))+H_(2(g)) , K_1 b) CH_(4(g))+H_2O_((g)) harr CO_((g))+3H_(2(g)) , K_2 c) CH_(4(g))+2H_2O_((g)) harr CO_(2(g))+4H_(2(g)) , K_3 Which of the following relations is correct?

2C_((s)) + 1/2O_(2(gg) rarr CO_(2(g)) , DeltaH = -787 KJ H_(2(g)) + 1/2O_(2(g)) rarr H_2O_((l)) , DeltaH = -286 KJ C_2H_(2(g)) + 2 1/2O_(2(g)) rarr 2CO_(2(g)) + H_2O_((l)) , DeltaH = -1301 KJ . Heat of formation of acetylene in KJ is

At 27^@C the reaction, C_6H_(6(l)) + 15/2 O_(2(g)) to 6CO_(2(g)) + 3H_2O((l)) proceeds spontaneously because the magnitude of