2 x C=O = 2 x
4 x 0-H = 4 x
Total =
Energy change = energy to break bonds - energy to make bonds.
Energy change = 2736 -
Energy change = -
In an reaction energy is released to the surroundings as heat.
Bonds are broken in the and new bonds formed in the Breaking bonds, , energy and forming bonds , energy
The energy change for a reaction = (total energy taken in to bonds in the reactants) - (total energy released when new bonds in the products).
As the energy, given out, (when the bonds) is greater than the energy, taken in, (when the bonds) the reaction is exothermic
H2 +O2 (reactants)
2H2O (products)
Which statement describes the activation energy?
Bonds broken = 2x H-H + 1x O=O
Energy to break bonds in ractants =
Bonds formed =
Energy to make bonds in product =
Energy change = energy taken to break bonds in reactants - energy released when bonds form in products =
