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11 Nov 2019
Suppose some recrystallized benzoic acid is ground into a fine powder, would this powder be distinguishable from impure benzoic acid by visual inspection? If so, does this difference enable you to conclude that the purification actually worked? Explain. b. How many degrees wide is the melting point range of the impure benzoic acid? _____ How many degrees wide is the melting point range of the recrystallized benzoic acid? ____ Do these data enable you to conclude that the purification actually worked? Briefly explain. C. Does your recrystallized benzoic acid melt at a (higher, lower, or the same) temperature compared to the impure benzoic acid. Does this result enable you to conclude that the purification actually worked briefly explain. d. The literature (accepted) melting point of benzoic acid is 122-123 degree C. Is your recrystallized product pure, by comparison to this value? The impure benzoic acid is 95% benzoic acid by weight. a. How much benzoic acid is in 1.25 g of this material? b. Would it be possible to obtain 1.25 g of pure benzoic acid in the recrystallization? Why or why not? Explain.
Suppose some recrystallized benzoic acid is ground into a fine powder, would this powder be distinguishable from impure benzoic acid by visual inspection? If so, does this difference enable you to conclude that the purification actually worked? Explain. b. How many degrees wide is the melting point range of the impure benzoic acid? _____ How many degrees wide is the melting point range of the recrystallized benzoic acid? ____ Do these data enable you to conclude that the purification actually worked? Briefly explain. C. Does your recrystallized benzoic acid melt at a (higher, lower, or the same) temperature compared to the impure benzoic acid. Does this result enable you to conclude that the purification actually worked briefly explain. d. The literature (accepted) melting point of benzoic acid is 122-123 degree C. Is your recrystallized product pure, by comparison to this value? The impure benzoic acid is 95% benzoic acid by weight. a. How much benzoic acid is in 1.25 g of this material? b. Would it be possible to obtain 1.25 g of pure benzoic acid in the recrystallization? Why or why not? Explain.
Jean KeelingLv2
4 Oct 2019