please help! Question 4 (2 points) What is the boiling point of ethanol (CH3CH2OH), given the...
Given the following information for ethanol, C,H,OH (at 1 atm), calculate the amount of heat in kneeded (at 1 atm) to vaporize a 20.6-g sample of liquid ethanol at its normal boiling point of 78.4 °C. boiling point = 78.4 °C AHvap 78.4 °C) = 38.6 kJ/mol melting point = -115°C AH(-115 °C) -5.02 kJ/mol specific heat liquid = 2.46 J/gºC
OLLILEI UM ALLI LUUIU. Compound Melting point (°C) A Hus (kJ/mol) Boiling point (°C) AHvap (kJ/mol) HF -83.11 4.577 19.54 25.18 HCI -114.3 1.991 -84.9 17.53 HBO -86.96 2.406 -67.0 19.27 HI -50.91 2.871 -35.38 21.16 Using the data in the table, calculate AS tus and ASvap for HCL. Astus = AS = J/(K.mol) ASvap = J/(K.mol) Determine the entropy change when 5.70 mol HCI) melts at atmospheric pressure. AS = | J/K
The following information is given for n-pentane, C5H12, at 1am boiling point = 36.2°C AHyap(36.2 °C) = 25.8 kJ/mol specific heat liquid = 2.28 J/gºC At a pressure of 1 atm, what is AH in kJ for the process of condensing a 38.4 g sample of gaseous n-pentane at its normal boiling point of 36.2 °C The following information is given for ethanol, C,H,OH, at 1am: boiling point = 78.4°C AH ap(78.4 °C) = 38.6 kJ/mol specific heat liquid =...
Please help already given the wrong answer twice Based on the thermodynamic properties provided for water, determine the energy change when the temperature of 1.25 kg of water decreased from 101 °C to 34.5 °C. Value Property Units °C Melting point Boiling point 100.0 °C AHfus 6.01 kJ/mol AHvap 40.67 kJ/mol Cp (s) 37.1 J/mol.°C J/mol.C 75.3 Gp (s) 33.6 J/mol.°C kJ 3165.6
2. What is the change in entropy in the system when 4.50g of ethanol (CH3CH2OH) condenses to liquid at its normal boiling point of 78°C? The heat of vaporization for ethanol is 38.56kJ/mol.
Consider the data in the table. Compound Melting point (°C) AHfus (kJ/mol) Boiling point (°C) AH ap (kJ/mol) HF -83.11 4.577 19.54 25.18 НСІ -114.3 1.991 -84.9 17.53 HBr - 86.96 2.406 -67.0 19.27 HI -50.91 2.871 -35.38 21.16 Using the data in the table, calculate ASfus and ASvap for HI. ASfus = J/(K.mol) AS vap = J/(K · mol) Determine the entropy change when 6.50 mol HI(1) boils at atmospheric pressure. AS = J/K
The boiling point of ethanol, CH3CH2OH, is 78.500 °C at 1 atmosphere. Kb(ethanol) = 1.22 °C/m In a laboratory experiment, students synthesized a new compound and found that when 13.27 grams of the compound were dissolved in 287.9 grams of ethanol, the solution began to boil at 78.706 °C. The compound was also found to be nonvolatile and a non-electrolyte. What is the molecular weight they determined for this compound ? g/mol
the normal boiling point of ethanol is 78.3 deg C and its molar enthalpy of vaporization is 38.56 Kj/mol. what is the change in entropy in the system in J/k when 97.2 grams of ethanol at 1 atm condenses to a liquid at the normal boiling point?
Consider the data in the table. Compound Melting point (°C) AH (kJ/mol) Boiling point (°C) AHap (kJ/mol HF -83.11 4.577 19.54 25.18 HCI -114.3 1.991 -84.9 17.53 HBr -86.96 -67.0 19.27 HI -50.91 -50.91 2.871 -35.38 21.16 Using the data in the table, calculate ASfus and AS vap for HI. 2.406 A Stus = 24.1 J/(K mol) ASvap = J/(K.mol) Determine the entropy change when 7.50 mol HI(1) freezes at atmospheric pressure. AS = J/K Question Source: MRG - General...
Question 13(6 points) Calculate the normal boiling point of a substance in Kelvin to 4 significant figures given the following information: AH vap = 29.00 kJ/mol, As*vap = 80.40 J/mol-K Your Answer: Answer Question 14 (6 points) For the following reaction run at 94°C: According to the following given data, the AHº for the reaction 2 NO(g) + O2(g) → 2 NO2(g) is NO(g)O2(g)NO2(6) AH° kJ/mol 90.3 0 33.2 5°C/molk) 211 205 240 kl. Round off your answer to the...