A reaction between gaseous species G and H follows the rate law
rate=k[G][H]2.
Initially, both reactants are present at measurable concentrations. At time t=0 a gas-removal device instantaneously extracts all of H so that [H] becomes effectively zero while [G] is unchanged.
Respond to the prompts below. Your answers should include clear chemical reasoning linked explicitly to the rate law.
(1) Part 1: (a) Describe qualitatively what happens to the instantaneous reaction rate immediately after H is removed.
(2) Part 2: (b) Compare the new rate to the rate that existed just before H was removed. State the ratio rbeforerafter and justify your answer.
(3) Part 3: (c) Explain why the observed change occurs, making explicit reference to the mathematical form of the rate law and the concept of reaction order.