Thermodynamics Flashcards
1
Q
Define thermochemistry?
A
Deals with energy changes accompanying chemical transformations and is based on its law of thermodynamics.
2
Q
Define thermochemical equation?
A
Balanced chemical equation with enthalpy change is called thermochemical equation.
3
Q
For exothermic reaction delta H is _______ & for endothermic reaction delta H is ______.
A
Negative. Positive
4
Q
What is standard enthalpy of reaction?
A
Enthalpy change for a reaction when all the reactants and products are taken in standard state(298K; 1bar).
5
Q
What is standard enthalpy of formation?
A
Enthalpy change when ONE MOLE OF A COMPOUND is formed from THEIR ELEMENTS in STANDARD STATE.
6
Q
In case of elements in their standard state, standard enthalpy of heat formation is taken as
A
Zero.
