Chemistry Class 11 NCERT Solutions: Chapter 6 Thermodynamics Part 3
Q: 11 Enthalpy of combustion of carbon to is Calculate the heat released upon formation of of from carbon and dioxygen gas.
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)