`DeltaH^(Theta)underset(f)' 298K` of methanol is given by the chemical equation

The standared heat of formation listed for gaseous NH_(3) is -11.0kcal mol^(-1) at 298K . Given that at 298k , the constant pressure heat capacities of gaseous N_(2),H_(2) , and NH_(3) are, respectively, 7.0, 6.0 and 8.0 cal mol^(-1) . Determine DeltaH^(Theta)underset(298K) and DeltaH_(773K) for the reactions: (1)/(2)N_(2)(g) +(3)/(2)H_(2)(g) rarr NH_(3)(g)

The standared heat of formation listed for gaseous NH_(3) is -11.0kcal mol^(-1) at 298K . Given that at 298k , the constant pressure heat capacities of gaseous N_(2),H_(2) , and NH_(3) are, respectively, 7.0, 6.0 and 8.0 cal mol^(-1) . Determine DeltaH^(Theta)underset(298K) and DeltaH_(773K) for the reactions: (1)/(2)N_(2)(g) +(3)/(2)H_(2)(g) rarr NH_(3)(g)

The standard enthalpies of formation at 298K for C Cl(g), H_(2)O(g), CO_(2)(g) and HCl(g) are -106.7, -241.8, -393.7 , and -92.5kJ mol^(-1) , respectively. Calculate DeltaH^(Theta)underset(298K) for the reaction C Cl_(4)(g) +2H_(2)O(g) rarr CO_(2)(g) +4HCI(g)

The standared enthalpies of formation at 298K for C C1(g), H_(2)O(g), CO_(2)(g) and HC1(g) are -106.7, -241.8, -393.7 , and -92.5kJ mol^(-1) , respectively. Calculate DeltaH^(Theta)underset(298K) for the reaction C C1_(4)(g) +2H_(2)O(g) rarr CO_(2)(g) +4HCI_(g)

The standared enthalpies of formation at 298K for C C1(g), H_(2)O(g), CO_(2)(g) and HC1(g) are -106.7, -241.8, -393.7 , and -92.5kJ mol^(-1) , respectively. Calculate DeltaH^(Theta)underset(298K) for the reaction C C1_(4)(g) +2H_(2)O(g) rarr CO_(2)(g) +4HCI_(g)

Sulphur exists in more than one solid form. The stable form at room temperature is rhombic sulphur. But above room temperature the following reaction occurs. S ("rhombic") rarrS("monoclinic") If DeltaH^(Theta) = 276.144J at 298 K and 1atm and DeltaG^(Theta) = 75.312J a. Calculate DeltaS^(Theta) at 298K . b. Assume that DeltaH^(Theta) and DeltaS^(Theta) do not vary significantly with temperature, calculate T_(eq) , the temperature at which rhombic and monoclinic sulphur exist in equilibrium with each other.

Sulphur exists is more than one solid form. The stable form at room temperature is rhombic sulphur. But above room temperature the following reaction occurs. S ("rhomic") rarrS("monoclinic") If DeltaH^(Theta) =- 276.144J at 298 K and 1atm and DeltaG^(Theta) = 75.312J a. Calculate DeltaS^(Theta) at 298K . b. Assume that DeltaH^(Theta) and DeltaS^(Theta) do not vary significantly with temperature, calculate T_(eq) , the temperature at which rhombic and monoclinic sulphur exist in equilibrium with each other.