1. 2. 3. An investigator measured the concentration of a reactant A as a function of...

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1. 2. 3. An investigator measured the concentration of a reactant A as a function of time. Part of his data are as follows: time / min [A]/mol dm³ 17.5 0.02566 39.6 0.01300 83.8 0.00650 Using these data, what can we say about the kinetics of the reaction? Determine the rate constant and the initial concentration. Calculate the half-life at time zero. Carbon dating using ¹4C is a highly important tool in archaeology. Using this technique it is possible to determine the length of time since an organism has died. The half-life of radioactive ¹4C is 5,760 years as it undergoes B-decay: 14C 14N+e. → 14C is formed in the upper atmosphere by the reaction of neutrons, generated by cosmic radiation, with ¹4N in the air: 'n + 14N - ¹4C + ¹p. Charcoal found under a stone at Stonehenge, England, was investigated using the radiocarbon method. A Geiger counter measured 9.24 counts per minute per gram (c.p.m.g.¹) carbon compared to 15.4 c.p.m.g¹ in a fresh sample of the same type of wood. How old is the charcoal? Consider the schematic reaction: A (i) (ii) (iii) P. If the reaction is one-half order with respect to [A], what is the integrated rate law expression for this reaction? What plot would you construct to determine the rate constant k for the reaction? What would be the half-life for this reaction? Will it depend on the initial concentration of A? nn 1. 2. 3. An investigator measured the concentration of a reactant A as a function of time. Part of his data are as follows: time / min [A]/mol dm³ 17.5 0.02566 39.6 0.01300 83.8 0.00650 Using these data, what can we say about the kinetics of the reaction? Determine the rate constant and the initial concentration. Calculate the half-life at time zero. Carbon dating using ¹4C is a highly important tool in archaeology. Using this technique it is possible to determine the length of time since an organism has died. The half-life of radioactive ¹4C is 5,760 years as it undergoes B-decay: 14C 14N+e. → 14C is formed in the upper atmosphere by the reaction of neutrons, generated by cosmic radiation, with ¹4N in the air: 'n + 14N - ¹4C + ¹p. Charcoal found under a stone at Stonehenge, England, was investigated using the radiocarbon method. A Geiger counter measured 9.24 counts per minute per gram (c.p.m.g.¹) carbon compared to 15.4 c.p.m.g¹ in a fresh sample of the same type of wood. How old is the charcoal? Consider the schematic reaction: A (i) (ii) (iii) P. If the reaction is one-half order with respect to [A], what is the integrated rate law expression for this reaction? What plot would you construct to determine the rate constant k for the reaction? What would be the half-life for this reaction? Will it depend on the initial concentration of A? nn

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1 Kinetics of the Reaction The reaction order can be determined by analyzing the concentrationtime d... View the full answer