Chemistry, 04.10.2020 05:01 duplessistoccara
Some nickel sulfate solution was carefully placed in the bottom of a beaker of water. The beaker was then covered and left for several days.
a. Describe what you would see after:
(i) a few hours
(ii) several days.
b. Explain your answer using your ideas of the kinctic theory of particles.
c. What is the name of the physical process that takes place in this experiment?
Answers: 3
Chemistry, 22.06.2019 01:20, whrjegt4jrnfdvj
1. suppose a reaction mixture, when diluted with water, afforded 300 ml of an aqueous solution of 30 g of the reaction product malononitrile [ch2(cn)2], which is to be isolated by extraction with ether. the solubility of malononitrile in ether at room temperature is 20.0 g/100 ml, and in water is 13.3 g/100 ml. what weight of malononitrile would be recovered by extraction with (a) three 100-ml portions of ether and (b) one 300-ml portion of ether? suggestion: for each extraction, let x equal the weight extracted into the ether layer. in part (a), the concentration in the ether layer is x/100 and in the water layer is (30 x)/300; the ratio of these quantities is equal to k 20/13.3.
Answers: 2
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