jeifetz1023
29.03.2020 •
Chemistry
A solution of carbon tetrachloride and carbon disulfide containing 50% by weight of each is to be continuously distilled at a rate of 5000 kg/h.
(a) Determine the concentration of the mixture in terms of mole fractions. (b) Determine the average molecular weight of the mixture.
(c) Calculate the feed rate in kmol/h.
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Ответ:
(a) CS₂ = 0.331, CCl₄ = 0.669; (b) 102 g/mol; (c) 49.1 kmol/h
Explanation:
Assume 5000 kg of mixture.
(a) Mole fractions
(i) Mass of each compound
Mass of CCl₄ = 2500 kg
Mass of CS₂ = 2500 kg
(ii) Moles of each compound
(iii) Mole fractions
Total moles = 16.3 kmol + 32.8 kmol = 49.1 kmol
The major component is usually called the solvent — Component 1 —carbon disulfide.
(c) Average molar mass
The average molar mass is the weighted molar mass of each component.
(d) Feed rate
Ответ:
DNA stands for DeoxyriboNucleic Acid.