The overall reaction and equilibrium constant value for a hydrogen-oxygen fuel cell at 298 k is given below. 2 h2(g) + o2(g) → 2 h2o(l) k = 1.34 ✕ 1083 (a) calculate ℰ° and δg° at 298 k for the fuel-cell reaction. ℰ° v δg° kj (b) predict the signs of δh° and δs° for the fuel-cell reaction. δh°: positive negative δs°: positive negative (c) as temperature increases, does the maximum amount of work obtained from the fuel-cell reaction increase, decrease, or remain the same? explain. since δs is , as t increases, δg becomes more . therefore, the maximum work obtained will as t increases.
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Chemistry, 22.06.2019 05:40, Maryjasmine8001
Salicylic acid is a very important acid. it is used to synthesize the aspirin by treating with acetic anhydride. a 0.2015-g sample of salicylic acid was dissolved in a 100.00-ml volumetric flask, and the solution was diluted to the mark. a 10-ml aliquot of this solution was titrated with standard naoh (0.01130 + 0.2% n) to a phenolphthalein faint pink color end point at 19.81 ml. (a) (calculate the normality of the salicylic acid solution used in the titration. (b) assuming the salicylic acid is pure, what is the equivalent weight of the salicylic acid? practice problems for the final exam (continued) (c) (calculate the inherent error in the determination of the equivalent weight you calculated in part (b). use the following absolute errors in the equipment /glassware when calculating the inherent error. 5.00-ml pipet: + 0.02 ml 100-ml volumetric flask: + 0.08 ml analytical balance: + 0.2 mg 25-ml buret: + 0.03 ml
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Chemistry, 22.06.2019 09:30, junkmailemail42
Which element is the least metallic between cadmium, silver, zinc, or iron?
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Chemistry, 22.06.2019 13:00, monkeyrose1999
The molality of calcium chloride (cacl2) in an aqueous solution is 2.46 m. what is mole fraction of the solute?
Answers: 3
The overall reaction and equilibrium constant value for a hydrogen-oxygen fuel cell at 298 k is give...
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