Ascientist measures the standard enthalpy change for the following reaction to be 81.1 kj : 2co2(g) + 5 h2(g)c2h2(g) + 4 h2o(g)based on this value and the standard enthalpies of formation for the other substances, the standard enthalpy of formation of co2(g) is

The enthalpy of the formation of is coming out to be -410.8 kJ/mol.Z

Explanation:

Enthalpy change is defined as the difference in enthalpies of all the product and the reactants each multiplied with their respective number of moles. It is represented as

The equation used to calculate enthalpy change is of a reaction is:  

For the given chemical reaction:

The equation for the enthalpy change of the above reaction is:

We are given:

Putting values in above equation, we get:

Hence, the enthalpy of the formation of is coming out to be -410.8 kJ/mol.

the only liquid elements at standard temperature and pressure are bromine (br) and mercury (hg). although, elements caesium (cs), rubidium (rb), francium (fr) and gallium (ga) become liquid at or just above room temperature.

explanation:

b.final