When a chemical is dissolved in a liquid, the freezing temperature of that liquid is slightly lowered as a result. One example of this is that salt water freezes at a lower temperature than pure water. The following table shows the freezing temperatures of several liquids. Liquid Temperature Water 0.0°C Acetic acid (vinegar) 17.0°C Ethanol (alcohol) -114.7 Of the choices listed, a liquid with a freezing point of -1°C would most likely be made of
A. something dissolved in water.
B. pure ethanol.
C. something dissolved in acetic acid.
D. something dissolved in ethanol.
Answers: 3
Chemistry, 22.06.2019 05:40
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
Answers: 2
Chemistry, 22.06.2019 17:30
Oil rich countries in the middle east cover about 4% of earths total land area but prossess about 48% of the worlds known oil reserves what is the main reason for high concentration of reserves in this part of the world
Answers: 3
Chemistry, 23.06.2019 00:00
What is the empirical formula of a compound that is 50.7% antimony and 49.3% selenium ?
Answers: 2
When a chemical is dissolved in a liquid, the freezing temperature of that liquid is slightly lowere...
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