Please show me how to find ΔH∘ for the following
reaction in kJ:
CH3OH(l)+O2(g)→HCO2H(l)+H2O(l)
ΔH∘ rxn = ΔH∘products - ΔH∘reactants
= (–409 - 285.8) - (–238.7 + 0)
= -694.8 + 238.7
= - 456.1 kJ
ΔH∘ rxn = - 456.1 kJ
note : stnadard thermodynamic value for all compounds here is the link you can see
http://bilbo.chm.uri.edu/CHM112/tables/thermtable.htm
Please show me how to find ΔH∘ for the following reaction in kJ: CH3OH(l)+O2(g)→HCO2H(l)+H2O(l)
Consider the following data. 2 H2(g) + O2(g) 2 H2O(l) ΔH = -571.7 kJ N2O5(g) + H2O(l) 2 HNO3(l) ΔH = -92.0 kJ N2(g) + 3 O2(g) + H2(g) 2 HNO3O(l) ΔH = -348.2 kJ Use Hess's law to calculate ΔH for the reaction below. 2 N2O5(g) 2 N2(g) + 5 O2(g) ΔH = _____kJ
For the following chemical reaction DH = -1453 kJ: 2 CH3OH(l) + 3 O2(g) ---> 2 CO2(g) + 4 H2O(l) How much energy in kilojoules will be released when 250 g of CH3OH undergo combustion? (M.M. (CH3OH) = 32.04) a)11337 kJ b)5669 kJ c)2834 kJ d)726.5 kJ e)1453 kJ
Consider the reaction: H2(g) + (1/2)O2(g) -------> H2O(l) ΔH° = -286 kJ Which of the following is true? (Select all that apply) the reaction is endothermic heat is given off by the surroundings the reaction is exothermic heat is absorbed by the system the enthalpy of the products is less than the that of the reactants
For the following reaction: 2CH3OH(l) + 3O2(g) → 2CO2(g) + 4H2O(l) Compound ΔH°f (kJ mol-1) S° (J mol-1 K-1) CH3OH (l) -238.40 127.19 O2 (g) 0.00 205.70 CO2 (g) -393.51 213.74 H2O (l) -285.83 69.91 Determine the temperature (to two decimal places in K) such that the reaction is in equilibrium in its standard states.
Given the following data: C(s) + O2(g) → CO2(g) ΔH = -393.5 kJ CS2(l) + 3O2(g) → CO2(g) + 2SO2(g) ΔH = -1076.5 kJ C(s) + 2S(s) → CS2(l) ΔH = +89.4 kJ Find the ΔH of the following reaction: SO2(g) → S(s) + O2(g)
Consider the following chemical reaction. NH3(g) + 2 O2(g) → HNO3(aq) + H2O(l) Calculate the change in enthalpy (ΔH) for this reaction, using Hess' law and the enthalpy changes for the reactions given below. (1a) 4 NH3(g) + 5 O2(g) → 4 NO(g) + 6 H2O(l); ΔH = −1166.0 kJ/mol (2a) 2 NO(g) + O2(g) → 2 NO2(g); ΔH = −116.2 kJ/mol (3a) 3 NO2(g) + H2O(l) → 2 HNO3(aq) + NO(g); ΔH = −137.3 kJ/mol
2CH3OH(g)→2CH4(g)+O2(g),ΔH=+252.8 kJ 1. Calculate the amount of heat transferred when 25.0 gg of CH3OH(g)CH3OH(g) is decomposed by this reaction at constant pressure 2. For a given sample of CH3OHCH3OH, the enthalpy change during the reaction is 82.3 kJkJ . What mass of methane gas is produced? 3. How many kilojoules of heat are released when 38.6 gg of CH4(g)CH4(g) reacts completely with O2(g)O2(g) to form CH3OH(g)CH3OH(g) at constant pressure?
The standard enthalpy change for the reaction of SO3(g) with H2O(l) to yield H2SO4(aq) is ΔH∘ = -227.8 kJ .? Use the following information S(s)+O2(g)→SO2(g), ΔH∘ = -296.8kJ SO2(g)+12O2(g)→SO3(g) , ΔH∘ = -98.9kJ to calculate ΔH∘f for H2SO4(aq) (in kilojoules per mole). [For H2O(l),ΔH∘f = -285.8kJ/mol]. Express your answer using four significant figures.
Methanol (CH3OH) burns according to the equation 2CH3OH(l) + 3O2(g) → 2CO2(g) + 4H2O(l), ΔH°rxn = –1454 kJ/mol. A) How much heat, in kilojoules, is given off when 150.0 g of methanol is burned? [ Select ] B) How many grams of CO2 are produced when the amount of heat determined in part A is released? [ Select ] Molar masses: CH3OH = 32.04 g/mol O2 = 32.00 g/mol CO2 = 44.01 g/mol H2O = 18.02 g/mol
Given the following data: 2C2H2(g) + 5O2(g) → 4CO2(g) + 2H2O(l) ΔH = -2600 kJ C2H2(g) + 2H2(g) → C2H6(g) ΔH = -312 kJ 2H2(g) + O2(g) → 2H2O(l) ΔH = -572 kJ Find the ΔH of the following reaction: 4CO2(g) + 6H2O(l) → 2C2H6(g) + 7O2(g)