The dissolution of calcium chloride in water 2+ CaCl2 (s)- Ca²+ (aq) + 2 Cl(aq) is a spontaneous process at 25°C, even though the standard entropy change of the preceding reaction is negative (AS° = -44.7 J/K). What conclusion can you draw about the change in entropy of the surroundings in this process?

Q: What is that the entropy change of the universe (J/mol-K) when the entropy change of the system is…

A:

Q: The standard enthalpies of formation, at 25.00 oC, of methanol (CH4O(l)), water (H2O(l)), and carbon…

A: The heat energy gets measured in J/K and not available for performing useful work is basically…

Q: methanol, CH3OH, vaporizes at 25°C is 35.4 kJ/mol. What is the entropy change (in J/K) when one mole…

A: Given,   □Hvap = 35.4 kJ/mol T = 25 °c = 298 K □S = □H/T   = 35.4 ×1000/298 = 118.79 J/K-mol

Q: For the reaction: CaCO3(s) → CaO(s) + CO2(g), ΔrHm(298K) = 178.2 kJ∙mol-1, and ΔrSm(298K) = 169.6…

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Q: is true of false? (a) The second law of thermodynamics says that entropy is conserved. (b) If the…

A: a) According to second law of thermodynamics, entropy of univese is always increasing.  So, it is…

Q: A coffee-cup (constant pressure) calorimeter is used to carry out the following reaction in 63.5 mL…

A: We have to calculate  ΔrH for the reaction.

Q: Consider the combustion of propane gas:C3H8(g) + 5 O2(g)---------->3 CO2(g) + 4 H2O(g) ΔHrxn =…

A: The reaction of combustion of propane

Q: 7) a) Is entropy increasing or decreasing in the following reactions? Explain CH: (g) + H20 (g) → co…

A: Given information:

Q: For the isothermal expansion of a gas into a vacuum,ΔE = 0, q = 0, and w = 0. (a) Is this a…

A: (a) The spontaneous process is the process which starts on its own or initiate without any external…

Q: The vaporisation of a certain element at 23.0 oC has the following enthalpy and entropy values:…

A:

Q: Consider the reaction of 7 mol H2(9) at 25°C and 1 atm with 7 mol Br2 (1) at the same temperature…

A: Given: 7H2(g)+7Br2(g)→14HBr(g) Temperature = 298 K ∆Go HBr = -53.5 kJ/mol

Q: Calculate the change in the entropy of the surroundings (in J/K) upon the combustion of 14.0 g of…

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Q: Which statement is incorrect? Gibbs free energy, AG, is a state function and when it is negative the…

A: ∆G is  change in Gibbs Free energy .For a process to br spontaneous ∆G should be negative.

Q: Calculate the standard molar entropy of vaporization of water at 57.0 °C, given that its standard…

A: Given , Vaporisation of water .

Q: Consider the reaction between nitrogen and oxygen gas to form dinitrogen monoxide:2 N2(g) +…

A: (a) Given data contains, The enthalpy of reaction is +163.2kJ. Temperature is…

Q: Consider a 1.2 mol block of iron with a specific heat capacity of 0.44 J/g°C. The atomic mass of Fe…

A: The amount of heat required to raise the temperature of the sample is given by: q =m c∆Tq is the…

Q: When 2.0 mol of CO2 is heated at a constant pressure of 1.25 atm, its temperature increases from…

A: Given:- No of moles of CO2 (n) = 2.0 mol Pressure (P) = 1.25 atm Temeperature (T1) = 280K…

Q: Consider the reaction: CaCO3(s) ↔ CaO(s) + CO2(g) The reaction enthalpy and entropy are: ΔHo rx =…

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Q: At constant pressure and 25°C, what is ΔrH° for the following reaction 2C2H6(g) + 7O2(g) → 4CO2(g) +…

A:

Q: The vaporization of methanol CH:OH(I) = CH3OH(g) is an endothermic process in which AHvap = 37.4…

A: ∆Hvap = 37.4KJ/mol ∆Svap = 111J mol-1K-1  Boiling Point at 385torr =? 385torr = 0.5065atm  R =…

Q: Consider a process in which the entropy of a system increases by 105 J K−1 and the entropy of the…

A: Given information,    The entropy of a system increases by 105 J K−1    The entropy of the…

Q: For the reaction below, ΔrH° = −3307.9 kJ mol−1. What is the standard enthalpy of formation of…

A: we are to find the heat of formation for FeS2 i.e ΔFeS2F°. given is  4 FeS2(s) + 11 O2(g)  ⟶ 2…

Q: Calculate the standard free energy change for the combustion of 1 mole methane using standard free…

A: Given that :

Q: Ice is heated at a constant pressure until it melts and vaporizes. What signs are associated with…

A: Ice is heated at a constant pressure until it melts and vaporizes.What signs are associated with the…

Q: Consider a process in which the entropy of a system increases by 125 J K−1 and the entropy of the…

A: Entropy change of the universe is the summation of entropy change of the system and entropy change…

Q: Consider each of the following reactions and decide whether the standard entropy change for the…

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Q: .) Which of the following processes are spontaneous and which are nonspontaneous: (a) the ripening…

A: The following processes are spontaneous, and which are (a) the ripening of a banana, (b)…

Q: Do not give handwriting solution. Calculate the entropy change, ΔS, for the following processes. If…

A: Entropy (S) is a parameter that is related to the disorders present in the system. The entropy value…

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

A: Entropy is the randomness in the system. Gases have more entropy than liquids. Similarly, liquids…

Q: What is the entropy change

A:

Q: When 2.25 mg of anthracene, C14H10(s), was burned off in a bomb calorimeter, the temperature…

A:

Q: Calculate the change in entropy

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Q: (1) What are the thermodynamic quantities of a system that affect the amount and sign of the…

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.