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what weight of NaCl in 800g acetone is needed to bring boiling point to 60°C
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- Consider this information regarding two compounds. Thallium azide: yellow crystalline solid; melting point = 330 C; slightly soluble in water, more soluble in hot water; insoluble in ethanol or diethyl ether. Camphene: colorless, cubic crystals; melting point = 51 C; boiling point = 159 C; insoluble in water; moderately soluble in ethanol; soluble in diethyl ether. (a) Is camphene an ionic or molecular compound? Explain your answer. (b) Is thallium azide an ionic or molecular compound? Explain your answer.The latent heat of vaporization of water at 100 oC is 539 kcal/kg. Calculate the boiling point of water at 600 mm Hg.What weight of NaCl in 800g acetone is needed to bring boiling point to 60°C? (Boiling point of pure acetone= 55.95°C ; Kb of acetone = 1.71 °C/m)
- An experiment was carried out to separate a mixture containing the following. Boiling Point Methyl Alcohol- 65 Ethyl Alcohol- 78 Toluene-114 Which component would be first to separate out?How many mL of 95 % alcohol and how much water should be used in compounding the following prescription? Rx Xylocaine 1 g Alcohol 70 % 30 mL Sig.: Ear dropsConsider two closed bottles, one containing diethyl ether, CH3CH2OCH2CH3, and the other containing 1-butanol, CH3CH2CH2CH2OH. In which bottle is the vapor pressure higher at 27 oC?
- (i) Why is an increase in temperature observed on mixing chloroform and acetone?(ii) Why does sodium chloride solution freeze at a lower temperature than water?1.Prepare 250ml of 70% and 90% ethyl alcohol from 95% ethyl alcoholusing the formula: C1V1=C2V2.How much of copper sulphate pentahydrate we need to prepare 0,5L 0,1 M solution?
- For each compound, pick the better solvent for dissolving it, water or hexane (C6H14). I2 ____________________________________ NaBr ____________________________________ Ethanol, CH3CH2OH ____________________________________ benzene, C6H6 ____________________________________A mixture containing ethanol (bp: 78 °C), acetone (bp: 56 °C), and ether (bp: 36 °C) undergoes distillation. Which of the following is NOT TRUE? a. Acetone is more volatile than ethanol but less volatile than ether. b. Ether will be the first to be collected in the receiving flask. c. Ethanol will remain in the distilling flask when the mixture is distilled at 56°C. d. Ether molecules have the strongest IMFA among the three.A sample consists of butyric acid, acetic acid and ethylene glycol. At a distilling temperature of 162°C, the distillate will significantly consist of: I. Butyric acid (boiling point: 162°C)II. Acetic acid (boiling point: 118°C)III. Ethylene glycol (boiling point: 197°C)A. I and II only B. I onlyC. I,II, and IIID. III only
