Which of the following is an example of a decomposition reaction?

a) 4p + 5o --> 2p2o5

b) ch4 + o2 --> co2 +2h2o

c) mnso4 --> mno + so3

d) mg + 2hcl --> mgcl2 + h2

Using this reversible reaction, answer the questions below: n2o4 2no2 (colorless) (reddish-brown) -as the temperature increased, what happened to the n2o4 concentration? -was the formation of reactants or products favored by the addition of heat? -which reaction is exothermic? right to left or left to right? -if the change of enthalpy of this reaction when proceeding left to right is 14 kcal, which chemical equation is correct? n2o4 2no2 + 14 kcal n2o4 2no2, hr = +14 kcal n2o4 + 14 kcal 2no2 n2o4 2no2, hr = -14 kcal