Question

How fast you drive is defined as the distance you travel (in miles) per hour or "mph." If we are interested in how fast a particular chemical reaction is proceeding, we measure the change in concentration, or the amount or pressure, of a component in the reaction (either the disappearance of a reactant of the appearance of a product) over time. 1. Consider the combustion of hydrogen gas: 2 H2(g) 02 + 2 H2O(g) If hydrogen is burning at the rate of 6.2 moles/second, then a) What is the rate of oxygen consumption in moles per second? b) What is the rate of formation of water vapor in moles per second? c) What is the basis for the relationship between the numerical rate and the specific reactant or product used to measure rate? d) Considering that reaction rates are always listed as positive values, which of the following is mathematically correct (A02/At, AH2/At, and AH2O/At refer to the change in amount of the specified reaction participant over change in time or simply a measure of reaction progress)? Explain. (HINT: Consider your answers to parts a) and b). ) A02/At = AH2/At = AH,0/At -A02/At = -AH/At = AHO/At A02/At = 2AH2/At = 2AH,0/At -A02/At = -2AH,/At = 2AH,0/At -2A02/At = -AH/At = AH,0/ A 2 402/At = AH/At = AH,0/At

Answer 1

E O as 2 H₂(g) + 2 H₂O (9) rate of hydrogen burning is 6.2 mdes) second. from exuation a mole of H₂ react with I moles of or 6.2 mole of H₂ ? 602 mole x imole - Solmoles. 2 moke . rate of oxygen consumption motion is is a bol moles second . " by equation) amole of H₂ Produce amole of H2O (from 6.2 mole of H₂ Produce 6.2 moves xa mole = 6.2 mole of the 2 mote e rate of formation of H₂O . 6.2 mole / second y numatically relation shop between specific readent or product is 1 of the rate of reaction with respectte rate of reaction with respectie H2 G = % of the rate of reaction with reagettono & rate of H₂ = rate of O, = 1 rate of H₂0 x2 " rate of th He a e e rate of O₂ rat = rate of H₂O react ent concentration decrease & Product contentration inerea .., 2 liey + Oy) - 2103) AHO