A balloon is filled with a ratio of 2:1 of H2 and O2 gas. If left undisturbed no reaction takes place. A small flame or spark will cause a loud explosion, burning H2 to produce H2O.
a) Write the balanced equation for this reaction.
b) Draw a reaction coordinate diagram showing the energy of the reactants, the products, and the transition state. Clearly label the axis.
c) Is the reaction exothermic or endothermic?
d) Why do we need a spark or flame to get this reaction to go?