Formation of from carbon and dioxygen gas can be represented as:
Heat released on formation of
Q: 12. Enthalpies of formation of
respectively. Find the value of for the reaction:
for a reaction is defined as thedifference between value of products and value of reactants.
For the given reaction,
Substituting the values of question, we get:
Hence, the value of for the reaction is
Q: 13 Given
What is the standard enthalpy of formation of gas?
Standard enthalpy of formation of a compound is the change in enthalpy that takes place during the formation of 1 mole of a substance in its standard form its constituent elements in their standard state.
Re-Writing the given equation for 1 mole of
Q: 14. Calculate the standard enthalpy of formation of from following data:
The reaction that takes place during the formation of can be written as:
The reaction (1) can be obtained from the given reactions by following the algebraic calculations as:
Equation (ii) equation (iii) – equation (i)