2HCOOH + O2 = 2CO2 + 2H2O + 508.6Kj

If the enthalpy change is observed in the reaction what would the mass of CO2 be produced

To determine the mass of CO2 produced in the reaction, we need to provide the amount of substance for either HCOOH (formic acid) or O2. Without this information, we cannot calculate the mass of CO2 precisely.

However, we can calculate the theoretical yield of CO2 based on a given amount of substance for one of the reactants. For example, if we have the initial mass of HCOOH, we can use stoichiometry to determine the mass of CO2 produced.

The balanced equation tells us that 2 moles of HCOOH produce 2 moles of CO2. Therefore, for every mole of HCOOH consumed, we expect an equal amount of CO2 produced.

Using the molar mass of CO2 (44.01 g/mol), we can convert the moles of HCOOH to the moles of CO2, and then to mass.

Please provide the amount of substance (mass or moles) for either HCOOH or O2, and then I will be able to calculate the mass of CO2 produced.