Questions tagged 'Entropy'
12 questions
A 30-kg iron block and a 40-kg copper block, both initially at 808C, are dropped into a large lake at 158C. Thermal equilibrium is
A 30-kg iron block and a 40-kg copper block, both initially at 80°C, are dropped into a large lake with a temperature of 15°C. As a result of heat transfer between the blocks and the lake, thermal equ...
Which of these species would you expect to have the lowest standard entropy (S°)?
Which species is expected to have the lowest standard entropy (S°) among the options provided? Please provide an explanation for your choice, considering factors such as molecular complexity, state of...
Which one has the larger standard entropy?
Which substance has the larger standard entropy? 1) 1 mol of P4(g) at 300°C and 0.01 atm versus 1 mol of As4(g) at 300°C and 0.01 atm. 2) 0.5 mol of N2(g) at 298 K in a 20 L volume versus 0.5 mol of...
Nov 24, 2024
Explain, in terms of particle arrangement, why a sample of solid NaCl has less entropy than a sample of aqueous NaCl?
Could you explain, in terms of particle arrangement, why a sample of solid sodium chloride (NaCl) has lower entropy compared to a sample of aqueous sodium chloride?
Nov 22, 2024
A process which is unfavorable with respect to enthalpy, but favorable with respect to entropy?
What is a process that is unfavorable in terms of enthalpy but favorable in terms of entropy? Can such a process occur at high temperatures but not at low temperatures, or could it occur at low temper...
Calculate ΔS∘rxn for the following reaction. The ΔS∘ for each species is shown below the reaction.
Please calculate the standard reaction entropy change (ΔS°rxn) for the following chemical reaction. The standard entropy values (ΔS°) for each species involved are provided below the reaction. Thank y...
Which of the following involve an increase in the entropy of the system?
Which of the following processes involve an increase in the entropy of the system? a. Melting of a solid b. Sublimation c. Freezing d. Mixing e. Separation f. Boiling
Oct 18, 2024
In which of the following physical states does a given substance have the highest entropy?
In which physical state does a given substance exhibit the highest entropy? Please select one of the following options: a. solid b. gas c. liquid d. all of the above
Classify the following phase changes by the signs of the systems entropy and enthalpy for the system?
Classify the following phase changes according to the signs of the system's entropy and enthalpy: Solid to gas Solid to liquid Liquid to gas Liquid to solid Gas to solid Gas to liquid I predict tha...
Find the change in S° for the formation of one mole PCl5(g)
Calculate the change in standard entropy (ΔS°) for the formation of one mole of PCl5(g) from its elements, using white phosphorus (P4) as the reactant. The values you will need are as follows: ΔS° of...