# Associate professor, PhD, Ostvald Roman Tomsk Polytechnic University, Institute of Physics and Technology Chair of Rare, Scattered and Radioactive Elements.

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Associate professor, PhD, Ostvald Roman Tomsk Polytechnic University, Institute of Physics and Technology Chair of Rare, Scattered and Radioactive Elements Applied Chemistry Tomsk 2011

Write a Russian equivalent for the next phrases  driving force,  flow rate,  surface of contact,  heat transfer 3

Draw up a table for the material balance of a rectification column in that process of separation hydrofluoric acid and water is produced. Starting composition is given as HF – 25 mole; H 2 O – 35 mole. Requirements to quality of product (final composition): content of HF in water – 1 mole, and purity of hydrofluoric acid are the theoretical absolute. 4

What is a driving force for the mass transfer process? 5

Draw up a table for the heat balance of a device to produce sulfuric acid from oleum and water. Considerations must be given to the quantity of heat which is forming at production acid and equal 3.25 k.J per day. Looses for a heating in surroundings are equal 0.40 k.J per day. The heat to warm up the constructive materials of the device is 1.15 k.J per day 6

What is a driving force for the heat transfer process? 7

Draw up a table for the heat balance of the desublimator in which process of recovery of hexafluoride of uranium is produced, if the condensation heat of UF 6 is equal 2.5 k.J/day, looses for heating in surroundings are equal 0.3 k.J/day, heat to warm up the constructive materials of desublimator is 1 k.J/ day 8

Write a Russian equivalent for the next phrases  mass transfer,  material balance,  flow rate,  surface of contact 9

Draw up a table for material balance of the sorption column in which process of separation of threefluoride of bromine and pentafluoride of iodine is produced. Starting composition: IF 5 – 0.65 mole; BrF 3 – 0.74 mole. Requirements to quality of product: content of BrF 3 in IF 5 – 0.1 mole, and contamination of BrF 3 by IF 5 can be 0.14 mole. 10

Write Russian equivalent for the next phrases  flux equations,  transverse velocity,  multidimensional,  creeping flow 11

Draw up a table for the material balance of the extraction column in which process of separation substances of uranium and thorium is produced. Starting flow rate (recalculated on UO 2 2+ and ThO 2 2+ ): UO 2 (NO 3 ) 2 – 2.15 k.mole/day; ThO 2 (NO 3 ) 2 – 1.22 k.mole/day. Flow rate of ThO 2 … in stream i is 1.15 k.mole/day, flow rate of UO 2 … in stream j is 2.0 k.mole/day 12

 What is the term “extraction” mean?  Try to fined some examples of the extraction using process in chemical technology.  What kind of extraction do you know? 14

15 Read the text about laboratory extraction and try to explain words in bold

16 separatory funnel some equipment for extraction carrying out in laboratory lodge crane, flow block mechanism vinegar calculate, recognize figure out liquids will form two layers when mixed together immiscible liquid special kind of compression for laboratory installations stopper plug, bung stopcocks acetum ground glass get stuck

17 disadvantage resilient laying, softener vigorously shaking flexible pipe snugly clamp, claw stem stalk, tip of smth ringstand intensive, active shook of smth cushion trouble back shelves tightly elastic tubing holder, rack, stand, tripod

Look the video about lab extraction and discuss the extraction process 18

 What does it mean the liquid-liquid extraction?  What equipment uses to realize liquid-liquid extraction?  What does it mean the immiscible liquids?  What factors influence on location of immiscible layers, what liquid locate in upper part of funnel and what in lower part of funnel? 19

 What types of design separatory funnels are uses in modern chemical labs?  How to realize the liquid-liquid extraction in chemical laboratory? (general steps of the process).  How separation of the immiscible layers does realized? 20