I use dry ice (solid CO2 which is -78.5 ℃) in my lab to cool reactions. If I leave a chuck of dry ice, that weights 26.3 grams on the table and the table is 25.0 ℃, and the heat of sublimation of CO2 is 26.1 kJ/mol, what is the change in entropy of the universe, system and surrounding if I let all of the dry ice sublime?

Q: The heat of vaporization AH, of benzene (CH) is 44.3 kJ/mol. Calculate the change in entropy AS when…

A:

Q: A chemical reaction has a standard entropy change, ΔSo, of -287.8 J/(molK) and a standard enthalpy…

A: The given data you have - ΔSo = -287.8 J/K-mol ΔHo =  -138.1 kJ/mol

Q: Without reference to any data tables, choose which member of following pairs has the lesser…

A: (27) H2O(l) or H2O(s) B has the lesser amount of entropy.

Q: ANSWER THE FOLLOWING QUESTIONS: 1. The relationship between entropy and temperature is introduced…

A: Since you have posted multiple questions ,as per guidelines we are subjected to solve one per…

Q: 1. For which one of the following reactions does the entropy of the system INCREASE? a. NH3(g) +…

A: Entropy is the degree of randomness. More is the randomness of molecules, more will be the entropy.…

Q: The following equation represents the essential change that takes place during the fermentation of…

A: Entropy is used to determine the randomness of the system.

Q: Calculate the standard entropy change for the reaction ; CO2(g) + H2O( l) →   CH4(g) + O2(g)…

A: Given   Reaction  CO2(g) + H2O(l) →   CH4(g) + O2(g)   Standard entropy change = ?

Q: 8. For which of the following reactions will the entropy of the system decrease? a) CuSO. (s) + H20…

A: Entropy is the measure of randomness or disorderness of the system.  More is the randomness in the…

Q: A 3.0 g block of ice melts at 0.0°C [ΔHfus(H2O) = 6.01 kJ/mol]. Calculate the entropy change for…

A: Heat require during melting of a liquid: Q1 = n . ΔHfus Heat require during warming up of a liquid:…

Q: Elemental mercury is a silver liquid at room temperature. Its normal freezing point is -38.9 °C, and…

A: The freezing point is an exothermic process in which heat is transferred from the system to the…

Q: The heat of fusion AH, of water (H₂O) is 6.0 kJ/mol. Calculate the change in entropy AS when 2.4 g…

A:

Q: In the first stage of the industrial production of nitric acid, ammonia reacts at high temperature…

A:

Q: Elemental mercury is a silver liquid at room temperature. Its normal freezing point is -38.9 °C, and…

A: The normal freezing point of mercury is -38.9 C. The given mass of mercury is 50.0 g. The value of…

Q: combustion reaction of propane (C3H8), determine ΔG° in kj mol-1 and predict if the reaction is…

A: Combustion equation of C3H8 - C3H8(g) + 5O2(g) ----> 3CO2(g) + 4H2O(g) ->Value may differ…

Q: Trinitrotoluene (TNT) is a highly explosive compound with a molecular weight of 227 It mol kJ -. If…

A: Given:Molecular weight of Trinitrotoluene(TNT)=227 g/molEnthalpy of fusion=40.8 KJ/molMelting…

Q: For each of the following, predict whether the entropy of the system change will be positive or…

A:

Q: 2A. ( i) Carbon dioxide sublimes ii) Hydroiodic acid and Sodium Hydroxide are neutralized iii) Neon…

A: If the randomness of the system increases then the entropy of the system will increase while if the…

Q: for which of these is there an increase in entropy? CaCO3(s) -> CaO(s) + CO2(g) NH3(g) + HCl(g) ->…

A: Answer: option1. CaCO3(s) -> CaO(s) + CO2(g) for this reaction entropy increases.

Q: Calculate the change in entropy that occurs in the system when 1.00 mole of diethyl ether (C4H10O)…

A: A compound has three phases. These forms are solid, liquid and gas. When one phase is converted to…

Q: 00 mol He gas, regarded here as a perfect gas, und <pansion at 20.0 °C from 1 atm to 3 atm.…

A:

Q: The give reaction is C6H12O6 (s) + O₂(g) → CO₂ (g) + H₂O (1) Asrxnnxsº (products)->nxsº (reactants)…

A:

Q: Isomers are molecules that have the same chemical formula but different arrangements of atoms, as…

A: C5H12 has three possible skeletal isomers: n-pentane iso-pentane neo-pentane Their structures are:…

Q: How can you calculate the standard entropy change for a reaction from tables of standard entropies?

A: The standard entropy change for a reaction from tables of standard entropies can be calculated by…

Q: Arrange the following sets of systems in order of increasing entropy. Assume one mole of each…

A: Entropy It is the measure of randomness or disorder of a system. Gaseous system is having high…

Q: The normal boiling point of ethanol, C2H5OH, is 78.3 °C. Its molar enthalpy of vaporization is 38.56…

A: Molar heat of vaporisation of a substance is defined as the amount of heat absorbed by one mole of…

Q: For each of the following reactions, indicate whether you would expect the entropy of the system to…

A: Given :-  CH3OH(l) → CH3OH(g)  N2O4(l)→ 2NO2(g)  CO(g) + H2O(s) → CO2(g) + H2(g)  2KClO3(s) →2KCl(s)…

Q: How does the entropy (S) of the system change when heating hydrogen gas from 60.0°C to 80.0°C?

A: Entropy is a measure or tendency in nature for systems to went towards a physical or chemical state…

Q: Determine the: a. Heat of the reaction, AH b. AS c. AG at 25°C for the combustion of ammonia,…

A: a.

Q: The normal boiling point of ethanol, C2H5OH, is 78.3 °C,and its molar enthalpy of vaporization is…

A: Record the given data, The given boiling point Tb = 78.3oC = 351.45 K ΔH = 38.56 kJ/mol = 38560…

Q: Predict the sign of the entropy change of the system foreach of the following reactions:(a) N2(g) +…

A: We will answer first three subparts at a time since you have not mentioned the exact subparts that…

Q: he balanced equation for the reaction of ammonia and oxygen is the following. 4 NH3(g) + 5 O2(g) →…

A:

Q: D. PCI, (s) → PCI,(1) + Cl, (g) The entropy, ASixn, mol Angas decreases. increases. has little or no…

A:

Q: the decomposition of ammonia to nitrogen and hydrogen gas. Substance S° (J/mol · K) H2(g) 130.7…

A: Entropy measures the randomness of the molecule. Gaseous molecule have higher entropy than liquid…

Q: te the change in entropy that occurs in the system when 3.20 mol of diethyl ether (C4H100) melts at…

A: Melting point (T) = - 116.3 0C                                = - 116.3 + 273.15…

Q: (a) In a chemical reaction 3 moles of A(g) and 2 moles of B(g) react to form 4 moles of C(g) and 1…

A: DS is referred as change in entropy.

Q: Which of the following descriptions about entropy is/are TRUE? I. It is positive for an isolated…

A: A question based on chemical thermodynamics that is to be accomplished.

Q: For which of these is there a decrease in entropy?   (NH4)2CO3(s)→2NH3(g)+CO2(g)+H2O(g)…

A: Entropy is a measure of randomness.  Entropy decreases whenever you have less moles of gaseous…

Q: The heat of vaporization AH, of acetic acid (HCH3CO₂) is 41.0 kJ/mol. Calculate the change in…

A:

Q: Calculate the entropy of the universe in J/K mol for the reaction: 2C;H6(g) + 702(g) → 4CO2(g) +…

A:

Q: A goldfish swims in a large bowl of water at 20 °c . Over a period of time, the fish transfers 120 J…

A: The change in entropy of the water can be determined as follows, dS = dQ/T

Q: You make tea with 0.250 (kg) of 80.0 ("C] water and let it to cool to 20.0 ['C) before drinking it.…

A:

Q: Calculate the standard free-energy change (ΔGo) at 25°C for the reaction H2(g)+O2(g) ⇌ H2O2(l)

A:

Q: The entropy of vaporization for a certain organic compound is 15.7 J/Kmol, and the boiling point is…

A:

Q: If the entropy change for the reaction is ∆Ssys = −308.6 J mol-1 K-1  at 298,15 K,  what value…

A: Enthalpy as well as entropy are interrelated concepts that are linked together with Gibbs energy…

Q: Methanol is burned as fuel in some race cars. This makes it clear that the reaction is spontaneous…

A: The second law of thermodynamic explains that the heat transfer occur in the system from higher to…

Q: In which of the following is the substance with the lower molar standard entropy listed first?…

A: Atoms and molecules have internal vibration and there are some randomness among them. the measure of…

Q: Please consider 0.15 gm of Constantan (a Cu/Ni alloy widely used in thermocouples, c = 390 J/•K-kg)…

A: 0.15 g of Constantan was cooled through exposure to the lab atmosphere.

Q: Calculate the change in entropy that occurs in the system when 21.0 g of diethyl ether condenses…

A: Entropy is the measurement of the randomness of the particles of the difference systems. Gases have…

Q: Without reference to any data tables, choose which member of the following pairs has the lesser…

A: Entropy is defined as the randomness of the system.