Q: perxyacetyl nitrate (CH3COOONO2, PAN) is an important species in the atmosphere. it undergoes a first order decomposition to give NO2 that is very temperature dependent.
CH3COOONO2 ----> CH3COOO+ NO2
The half life for the decomposition is 21 minutes at 25 degree celsius and 5.6 hours at 0 degree celsius.
a) Calculate the acitivation energy for the decomposition.
b) To test solubility, 0.020 mol of solid lead iodide, PbI2, is added to 0.500 L of water. after eqilibrium has been established 0.00076 mol of Pb^2+ (aq) and 0.00152 mol of I^- (aq) are present. what is the equilibruim constant, Ksp, for the dissolution of lead iodide in water?