Calculate the standard enthalpy change for the formation of carbon dioxide (CO2) from its elements carbon (C) and oxygen (O2) given the following information:- The standard enthalpy change for the combustion of carbon to form carbon dioxide is -394 kJ/mol.- The standard enthalpy change for the combustion of hydrogen gas (H2) to form water (H2O) is -286 kJ/mol.- The standard enthalpy change for the reaction of oxygen gas (O2) with hydrogen gas (H2) to form water (H2O) is -572 kJ/mol.Note: All values are at standard temperature and pressure (298 K and 1 atm).

Question

Calculate the standard enthalpy change for the formation of carbon dioxide (CO2) from its elements carbon (C) and oxygen (O2) given the following information:- The standard enthalpy change for the combustion of carbon to form carbon dioxide is -394 kJ/mol.- The standard enthalpy change for the combustion of hydrogen gas (H2) to form water (H2O) is -286 kJ/mo

Answer 1

To calculate the standard enthalpy change for the formation of carbon dioxide  CO2  from its elements carbon  C  and oxygen  O2 , we can use the given information and Hess's Law. Hess's Law states that the total enthalpy change for a reaction is the same, regardless of the pathway taken.We are given the following reactions:1. C  s  + O2  g   CO2  g     H1 = -394 kJ/mol2. H2  g  + 1/2 O2  g   H2O  l     H2 = -286 kJ/mol3. H2  g  + 1/2 O2  g   H2O  l     H3 = -572 kJ/molWe are interested in the enthalpy change for the formation of CO2, which is given by reaction 1. Since reaction 1 is already in the desired form, we don't need to manipulate the other reactions.Therefore, the standard enthalpy change for the formation of carbon dioxide  CO2  from its elements carbon  C  and oxygen  O2  is:H = -394 kJ/mol