Chemistry

4. What is the difference in composition between a sample of distilled water and one of the tap water? Specify what impurities are known to be involved. 5. What is the purpose of the boiling chip? How does a boiling chip produce the desired effect? 6. Explain why a packed fractional distillation column is more effective in separating two closely boiling liquids than an empty one. 7. Why is it dangerous to heat a compound in a distilling assembly that is closed tightly at every point and has no opening to the atmosphere?

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4. What is the difference in composition between a sample of distilled water and one of the tap water? Specify what impurities are known to be involved. 5. What is the purpose of the boiling chip? How does a boiling chip produce the desired effect? 6. Explain why a packed fractional distillation column is more effective in separating two closely boiling liquids than an empty one. 7. Why is it dangerous to heat a compound in a distilling assembly that is closed tightly at every point and has no opening to the atmosphere?

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EXPERT ANSWER 4)Solution- The water which has no impurities or pure H2O is distilled water.Distilled water has very high electrical resistance. also various materials dissolvs in it and, they form ions as they dissolve,and ions conduct electricity. example if we add sugar to water, the conductivity increases very little, because it doesn’t ionize. and if …

4. What is the difference in composition between a sample of distilled water and one of the tap water? Specify what impurities are known to be involved. 5. What is the purpose of the boiling chip? How does a boiling chip produce the desired effect? 6. Explain why a packed fractional distillation column is more effective in separating two closely boiling liquids than an empty one. 7. Why is it dangerous to heat a compound in a distilling assembly that is closed tightly at every point and has no opening to the atmosphere? Read More »

Question: P5-14, The dehydration butanol of alumina is carried out over a s

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P5-14, The dehydration butanol of alumina is carried out over a silica-alumina catalyst at 680 K. CH,CH,CH.CH,OH >CH,CH=CHCH, +H,0 The rate law is КРga – (1+KBP) with k = 0.054 mol/gcat-heatm and KBu = 0.32 atm’. Pure butanol enters a thin-tubed, packed-bed reactor at a molar flow rate of 50 kmol/hr and a pressure of …

Question: P5-14, The dehydration butanol of alumina is carried out over a s Read More »

n, Review I Constants I Periodic Table Sure Ris van der Waals constants for hypothetical gases Gas (L2.atm/mol) (L/mol) 5.46 0.0305 elves. gas on, D 4.16 0.0373 М 2.25 0.0428 1.34 0.0322 r the Part A e to erm alar Based on the given van der Waals constants, arrange these hypothetical gases in order of decreasing strength of intermolecular forces. Assume that the gases have similar molar masses. Rank from strongest to weakest intermolecular attraction. To rank items as equivalent, overlap them. View Available Hint(s) OA

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4. The following mechanism has been proposed for a reaction: Step 1 H2(g) + Step 2 O(g) + O2(g) H2(g) → O(g) H2O(g) + H2O(g) → (a) What is the equation for the overall reaction? (b) What are the expected rate laws for Step 1 and Step 2? Step 1 – Step 2 (c) What if any intermediates are there? (d) If step 1 is slow and step 2 is fast, what is the overall rate law for the reaction? 8. Consider the following equilibrium. The AHrxn-- 116.2 kJ/mol 2NO(g) + O2(g) + 2NO2(g) If the following changes are made to the reaction, in which direction will the equilibrium shift? (a) NO is added to the reaction flask. (b) O, is removed from the reaction flask (C) NO2 is removed from the reaction flask (d) The volume of the flask is doubled (e) The temperature is increased

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