ThermochemistryHard
Question
ᐃHfo(298K) of methanol is given by the chemical equation :
Options
A.CH4(g) + 
O2(g) → CH3OH(g)
O2(g) → CH3OH(g)B.C(graphite) + O2(g) + 2H2(g) → CH3OH(l)
O2(g) + 2H2(g) → CH3OH(l)C.C(diamond) + O2(g) + 2H2(g) → CH3OH(l)
O2(g) + 2H2(g) → CH3OH(l)D.CO(g) + 2H2(g) → CH3OH(l)
Solution
Heat of formation is defined as the heat exchange when one mole of a compound isformed from its constituent elements at STP. In case of allotrope, most stable allotrope is taken of allotrope, most stable allotrope is taken into account. Among graphite and diamond; graphite is stabler. hence, heat of formation of CH3OH represented by the eqn.
C(graphite) +O2(g) + 2H2(g) → CH3OH(l)
C(graphite) +
O2(g) + 2H2(g) → CH3OH(l)Create a free account to view solution
View Solution FreeMore Thermochemistry Questions
The enthalpies of formation of FeO(s) and Fe2O3(s) are −65.0 and −197.0 kcal/mol, respectively. A mixture of the two oxi...Calculate the enthalpy of formation of I2O5(s) from the following data.(i) I2O5(s) + H2O(l) → 2HIO3(aq): ΔH = +4.0 kJ(ii...The heat of combustion of yellow phosphorous is - 9.91 kJ and of red phosphorous to redphosphorus is :...50.0 mL of 0.10 M HCl is mixed with 50.0 mL of 0.10 M NaOH. The solution′s temperature rises by 3.0oC. Calculate t...Assume that for a domestic hot water supply, 160 kg of water per day must be heated from 10oC to 60oC and gaseous fuel p...