Question

Identify fractional order reaction from the following reactions. [ ]

a) CH3
CHO  CH4
+ CO
b) 2O3  3O2

c) 2SO2
+ O2  2SO3

d) H2
+ Br2  2HBr​

Answer 1

Answer:

Hess’s law allows us to construct new chemical reactions and predict what their enthalpies of reaction will be. This is a very useful tool because now we don’t have to measure the enthalpy changes of every possible reaction. We need measure only the enthalpy changes of certain benchmark reactions and then use these reactions to algebraically construct any possible reaction and combine the enthalpies of the benchmark reactions accordingly.