CHEMISTRY GRADE 11 Exercise 4.1 1. Write the rate expression for the following reaction CH_{ }(R) 2O_{2}(s) CO, (g) a the formation of co, and H,O 2H₂O (g) or example are the brow pressure cation cha NO Aurma listed in mal de Time b. the disappearance of CH, and O, 2. The reaction for formation of ammonia is given as 2NH(g) V_{2}(g(g) 3H_{2}(g) Write the rate reaction for: a, the formation of NH, b. the disappearance of N_{2} and H_{2} 3. Consider the reaction of: 4NO_{2}(g) O_{2}(g)\rightarrow2N_{2}O_{3}(g) Suppose that, at a particular moment during the reaction, molos oxygen is reacting at the rate of 0.037 mol L^{-1}N^{-1} a. At what rate is N,O, being formed? b. At what rate is NO_{2} reacting? 4. Consider the reaction of: 4PH_{3}(g)\rightarrow P_{4}(g) 6H_{2}(g) Suppose that, at a particular moment during the reaction L^{-1}s^{-1} , molecu hydrogen is being formed at the rate of 0.078 mol a. At what rate is P_{4} being formed? b. At what rate is PH_{3} reacting? etermination of Rate of Reaction observable rate is change in an observable property over time. The actione selected based upon what can be measured in the laboratory. This o colour change, a temperature change, a pressure change, a mass change appearance of a new substance (for example, amount of precipitate for observable (measurable) properties can be used to determine the cham ntration over time.