Determine the entropy change when 8.50 mol HBr(1) freezes at atmospheric pressure.

Q: The normal boiling point of Br2(l) is 58.8 ∘C, and it'smolar enthalpy of vapor Calculate the value…

A: The molar enthalpy of vaporization is 29.6 kJ/mol Temperature = 58.8 + 273 = 331.8 K

Q: The heat of vaporization AH, of methanol (CH;OH) is 35.3 kJ/mol. Calculate th

A: If   vapourisation of methanol       CH3OH(l)     ⇔  CH3OH(g)    △Hv = 35.3 KJ/mol     then…

Q: For the following reaction (the detonation of nitroglycerin), is it spontaneous under standard…

A: Given that : We have to identify whether the reaction for the detonation of nitroglycerin is…

Q: ) True or False?  If false, correct the statement.        a) The entropy of a substance increases…

A: The entropy of a substance increases when a substance changes from liquid to vapor at any…

Q: Consider the data in the table. Compound Melting point (°C) AHfus (kJ/mol) Boiling point (°C) AHvap…

A: Given: The melting and the boiling point of HBr is -86.96°C and -67.0°C, respectively. The enthalpy…

Q: Define entropy and state the second law of thermodynamics?

A: Entropy is a thermodynamic property which shows the inaccessibility of a system's thermal energy. It…

Q: he sum of the entropy changes of the system and the surroundings (∆SSYS + ∆SSURR) are:

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Q: What is the ΔS of 5 moles CO2 (g) heated at constant volume from 100 °C to 400 °C? The Cp,m of CO2…

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Q: 1) Which of the following statements is TRUE? A) ASuniverse is always greater than zero for a…

A: The condition of spontaneity of a reaction is that overall change in Gibbs free energy should be…

Q: Calculate the entropy change that occurs when 1.00 mol of water freezes at its freezing point.

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Q: According to the second law of thermodynamics, what must be true about entropy changes when dry ice…

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Q: Does someone know the standard entropy values in J/K for H2(g), F2(g) and HF(g)?

A: The standard entropy values of hydrogen and fluorine gases are 130.6 J/Kmol and 202.8 J/Kmol…

Q: Which of the following substances exhibits the greatest standard molar entropy, So? Select one: H2…

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Q: What is the entropy when 1.39 moles of CCl₂F₂ vaporize at 25°C? [∆H(vap) = 17.2 kJ/mol at 25°C]

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Q: Predict the sign of delta H and delta S for the reaction X(s) = X(g) and state under what conditions…

A: As solid  X is transformed into gaseous species. thus in this reaction entropy increases as the…

Q: How ΔGo is related to ΔHo and ΔSo . Illustrate by Equation ?

A: Given terms,    ΔGo , ΔHo and ΔSo  G - free energy H - enthalpy S - entropy

Q: Given the reaction:  CaCO3(s)  ??  CaO(s)  +  CO2(g), the entropy (ΔS) change for this reaction is…

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Q: The standard molar entropy of silver chloride (AgCl) is 96.2 J/(mol x K). What is the entropy of…

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Q: There is a natural tendency for the universe to have increased entropy.

A: Given statement is true or false ?

Q: which of the following reaction leads to an increase in entropy of the system? a) NH4Cl(s) ->…

A: * Answer : Correct option is which entropy increases __ a) NH4Cl(s) -----> HCl(g) + NH3(g)   *…

Q: Suppose a compound could point in any of three directions in the solid and still have the same…

A: • This problem is based upon the third law of thermodynamics.  • This law can be given as, Total…

Q: 3. True or false: the standard entropy of H₂(g) at 298.15 K is zero. (a) True (b) False

A: Standard entropy of a substance is the entropy of 1mole of the substance at standard conditions (…

Q: The boiling point of ethanol is 173.1 F. In an experiment the entropy change for the reaction…

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Q: In a typical cold pack (used for sports injuries), a salt such as ammonium nitrate is kept in a…

A: Dissolution of ammonium nitrate in water is given by, NH4NO3(s)→H2O(l) NH4+(aq)+NO3-(aq)   ∆H=+25.09…

Q: What is the entropy when 1.35 moles of CCl₂F₂ vaporize at 25°C? [∆H(vap) = 17.2 kJ/mol at 25°C]

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Q: How does the molar entropy of a substance change with increasing temperature?

A: The randomness of the system is measured by the term, called entropy. The entropy of a system is an…

Q: ΔGo

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Q: Determine the entropy of * NH₂Cl(s) → NH3(g) + HCl(g) > positive negative

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Q: What is the entropy when 1.34 moles of CCl₂F₂ vaporize at 25°C? [∆H(vap) = 17.2 kJ/mol at 25°C]

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Q: What is the entropy change of the universe when 5.74 mol of ice melts at temperature is 25.8oC?…

A: Answer: Entropy is the measure of system's disorderliness or randomness. In more possible states…

Q: What peptides are expected to be produced when a-melanotropin (Problem 2) is cleaved by (a) trypsin,…

A: Protein is a polymer of amino acids bonded together through a peptide bond. The peptide chains can…

Q: Arrange H202, H2S and H20 in order of decreasing molar entropy

A: WE HAVE TO ARREANGE IN DECREASING ORDER OF MOLAR ENTROPY.

Q: Compute for the total entropy change( ΔSuniv) in the oxidation of metallic iron into ferric oxide…

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Q: What is the entropy change of a gas in J/K (to 2 decimal points) when one mole of a perfect gas…

A: Given that -  Number of moles of gas = 1  Initial volume of gas = 0.36 m3  Final volume of gas =…

Q: How do you predict the entropy of a gas will change if a 2.0 L sample of that gas is compressed to a…

A: The entropy of a system is defined as the measure of randomness between the particles present in a…

Q: 5. Which of the following substances has the greatest standard molar entropy at 25 °C? a) Na (s) b)…

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Q: What is the entropy of the process when 0.6831 moles of N 2 gas are compressed from 54.42 L to 28.11…

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Q: Acetone, CH; COCH3 , boils at 56°C. The heat of vaporization of acetone at this temperature is 29.1…

A: Given: Boiling point temperature= 56 C=329.15 K Heat of vaporization= 29.1 kJ/mol