One thousand kg h'' of a 35 wt% acetic acid-in-water solution is to be extracted with pure isopropyl ether supplied at a rate of 2,000 kg h'. (15 marks] (a) calculate and compare the percentage recovery of the acetic acid from the aqueous phase feed stream for the following arrangements: i) single-stage contact [2 marks) ii) cross-flow (successive) four (4)-stage contact with equal proportions of the ether solvent fed to each stage. [3 marks] (b) if the separation is to be carried out using a continuous counter-current extraction cascade, how many equilibrium stages will be required to achieve the same degree of acid recovery as that found in a (ii) above? (3 marks] (c) what minimum solvent rate would be required to yield the same raffinate composition as in (b)? (3 marks) (d) if an existing counter-current extraction column of six (6)-equilibrium stages is used, what would be the percentage recovery of acid achieved?

Oxidation-reduction reactions (often called "redox" for short) are reactions that involve the transfer of electrons from one species to another. oxidation states, or oxidation numbers, allow chemists to keep track of these electron transfers. in general, one element will lose electrons (oxidation), with the result that it will increase in oxidation number, and another element will gain electrons (reduction), thereby decreasing in oxidation number. the species that is oxidized is called the reducing agent or reductant. the species that is reduced is called the oxidizing agent or oxidant. to sum up: oxidation = increase in oxidation state = loss of electrons = reducing agent reduction = decrease in oxidation state = gain of electrons = oxidizing agent part a which element is oxidized in this reaction? fe2o3+3co→2fe+3co2 enter the elemental symbol. view available hint(s) is oxidized part b which element is reduced in this reaction? 2hcl+2kmno4+3h2c2o4→6co2+2mno2+2kcl+4h2o enter the elemental symbol. view available hint(s) is reduced

What term describes technology that operates on an atomic level

The atom fluorine generally will become stable through the formation of an ionic chemical compound by accepting electron(s) from another atom. this process will fill its outer energy level of electrons.