The gas-phase reaction between H2 and l2 to form HI involves a two-step mechanism: l2 ; 21 H2 21 - 2HI The rate of formation of HI increases with the intensity of visible light. (a) Explain why this fact supports the two-step mechanism given. (Hint: The color of l2 vapor is purple.) (b) Explain why the visible light has no effect on the formation of H atom

Part b: study of equilibrium on solubility: mg(oh)2(s) ⇌ mg2+(aq) + 2 oh–(aq) cloudy clear (pink) 7. a. b. 8. a. b. 9. 10. 11. 12. when adding concentrated hydrochloric acid, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 7a. you should indicate which ion was added to or removed from the equilibrium mixture. when adding edta, how did the appearance of the equilibrium mixture change? the change in appearance indicated a shift in the point of equilibrium. in which direction did the equilibrium shift? (l) left (r) right explain your answer to question 8a. you should indicate which ion was added to or removed from the equilibrium mixture. upon heating in which direction is the equilibrium shifting? upon cooling in which direction is the equilibrium shifting? is the forward reaction a. endothermic explain your answers to questions 9, 10, and 11. (l) left (r) right (l) left (r) right b. exothermic

Which of these expressions are correct variations of the combined gas law? p1v1t2 = p2v2t1 both

Tell me the iupac name of the following compounds: