Unformatted text preview: g 1 before the system has solidified. So T g 2 < T g 1 . (b) The fictitious compound, arrhenium fluoride (AhF), decomposes readily at temperatures exceeding 37ºC. The figure below shows how the rate of reaction varies with the concentration of AhF. The rate, r , is in units of M s –1 and the concentration of AhF, c , is in units of M (mole L –1 ). The slope has a value of 1.67 and the intercept has a value of 0.490. log (rate) log (concentration) (i) What is the order of reaction? n = 1.67 (ii) Calculate the value of the rate constant. The value of the rate constant is given by the intercept of the plot of log rate versus log concentration. Therefore, ⎛ mol ⎞ − 0.67 k = 10 0.490 = 3.09 ⎜ ⎝ L ⎠ ⎟ 1 s...
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- Fall '04
- Chemistry, Glass, glass transition temperature, Glass transition