BE = bond energy
BE reaction = BE for N2 + BE for 3*H2 - BE for 2*3(N-H)
If BE rxn is -, exothermic
If BE rxn is +, endothermic
The others are done in a similar fashion.
I got A) Exo
But its wrong :/ i have no idea what i am doing wrong.
I know that A is an exothermic reaction.
Yes, from general knowledge
A is exothermic
B is exothermic
C is endothermic (the reverse reaction is exothermic!)
D is the formation of F2(g) from its elements in their standard states. All elements in their standard states have a standard enthalpy of formation of zero, as there is no change involved in their formation. So D is neither exothermic or endothermic as
A B & C are correct
D.Should say: 2F---Fsub2. Exothermic. One bond is formed F-F
Chemistry - Predict whether the following reactions will be exothermic or ...
chemistry - Label each of the following reactions as exothermic or endothermic...
chemistry URGENT (2) - Label each of the following reactions as exothermic or ...
chemistry - Predict whether reactions should occur between aqueous solutions of ...
chemistry - Which of the following can we predict from an equilibrium constant ...
Chemistry - I'm having a hard time understanding Endothermic and Exothermic ...
Chemistry - Label each of the following reactions as exothermic or endothermic...
chemistry - For each of the following reactions, predict whether the ...
chemistry - Predict the Products for the following reactions and write the ...
Chemistry - (1) Use the thermodynamic values to (a) deduce the enthalpy change ...