For melting water at 25 C, what is the sign of delta S for system, surroundings...
For melting water at 25 C, what is the sign of delta S for system, surroundings and universe?
I'm thinking delta S would be positive for the system, but what about the others?
Homework Answers
Yes, you are absolutely correct.
Due to increase in randomness of water molecules during melting process of ice, entropy of system increases. So delta S remains positive for system.
During melting of ice heat energy is taken away by the system from surroundings due to which the randomness of particals in surroundings may decrease. So delta S for surroundings may remain negative.
Melting of ice being a sponeous process at 25deree centigrade, Sum of the Delta S system and surroundings must remain positive (According to spontaneity concept - Second law of thermodynamics)
Add Answer to:
For melting water at 25 C, what is the sign of delta S for
system, surroundings...
Place liquid water (system) at 25°C in a vacuum insulated space. What is the value of...
Place liquid water (system) at 25°C in a vacuum insulated space. What is the value of each thermodynamic function when evaporated and saturated? deltaH(water), deltaS(water) , deltaT(water) , deltaS(surrounding) , deltaS(universe) delta is a triangel sign
Please explain your answer A sample of pure water is cooled (reversible) and freezes at -0*C....
Please explain your answer A sample of pure water is cooled (reversible) and freezes at -0*C. What is the sign of the entropy of the system, surroundings and universe. System Surroundings Universe a)Positive Negative Positive b)Positive Positive Zero c)Negative Negative Positive d)Negative Positive Zero
process has delta H = -87.4 kj. a) calculate delta S surroundings of the process at...
process has delta H = -87.4 kj. a) calculate delta S surroundings of the process at 204 K b) if delta S system for the same process is 18.7 J/K, how much energy is available to do work at 298 K? assume delta H process is constant through temperature range c) could that much energy (part b) actually be utilized for work? why or why not
What are the signs (+ or -) for delta H, delta S, and -T(delta S) which...
What are the signs (+ or -) for delta H, delta S, and -T(delta S) which are required to produce the following signs (+ or -) of delta G. Think about the equation delta G = delta H - T(delta S). 1. If delta G is negative 2. If delta G is either positive or negative (there are 2 solutions) 3. If delta G is negative
For the following reaction, at 25 °C (room temperature), what is the entropy change of the...
For the following reaction, at 25 °C (room temperature), what is the entropy change of the system? H2O(l) → H2O(s). A) ΔSsys < 0 B) ΔSsys > 0 C) ΔSsys = 0 ----------------------------------------------------------------------------------------------------------------------------- For the following reaction, at 25 °C (room temperature), what is the entropy change of the surroundings? H2O(l) → H2O(s) A) ΔSsurr < 0 B) ΔSsurr = 0 C) ΔSsurr > 0 ---------------------------------------------------------------------------------------------------------- For the following reaction, at 25 °C (room temperature), what is the entropy change...
What is delta S? Predict the signs of Delta S and Delta H for the freezing...
What is delta S?
Predict the signs of Delta S and Delta H for the freezing of water into ice at 273 K. a. Delta H > 0 and Delta S < 0 b. delta H = 0 and Delta S > 0 c. Delta H < 0 and Delta S < 0 d. Delta H > 0 and Delta S = 0 e. Delta H < 0 and Delta S > 0
Predict the signs of delta H (Enthalpy) and delta S (Entropy) for the evaporation of water at 85 C
Predict the signs of delta H (Enthalpy) and delta S (Entropy) for the evaporation of water at 85 C.
Solid KOH is being dissolved in water: Identify the system and the surroundings. If the reaction...
Solid KOH is being dissolved in water: Identify the system and the surroundings. If the reaction is exothermic, what happens to the heat of each species? Draw a reaction coordinate diagram profile for an endothermic and an exothermic reaction. Label DeltaH and identify whether it is positive or negative for each reaction A reaction is being run in a calorimeter. Find DeltaT given the following values: Ti = 24.6C; Tf = 29.2C. Is this reaction endothermic or exothermic?
What is the sign of AU as the system of ideal gas goes from point A...
What is the sign of AU as the system of ideal gas goes from point A to point B on the graph? (Hint the U is function of temperature only for a perfect gas) p (atm) 4 3 2 B V (m3) 1 2 3 4 The states And B have the same internal energy, so delta U is zero The internal energy of the system increases, so delta U is positive The internal energy of the system decreases, so...
T=20 degrees Celsius, T= 273.13+20=293.13 Delta G= Delta H - T×Delta S. 1.What is delta S Using the tables i have provided? 2. What is the significance of the sign Delta S? *PLEASE SHOW ALL CALCULATIO...
T=20 degrees Celsius, T= 273.13+20=293.13
Delta G= Delta H - T×Delta S.
1.What is delta S Using the tables i have provided?
2. What is the significance of the sign Delta S?
*PLEASE SHOW ALL CALCULATIONS*
uBBOsty Part III. Entropy Calculations 1. Use your average AHo and A Go values in The Gibbs-Helmholtz equation (1) to calculate and average ASo value. Also, incorporate your ± values to calculate the precision for Δ. What is the significance of the sign for...
What is delta S?
Predict the signs of Delta S and Delta H for the freezing of water into ice at 273 K. a. Delta H > 0 and Delta S < 0 b. delta H = 0 and Delta S > 0 c. Delta H < 0 and Delta S < 0 d. Delta H > 0 and Delta S = 0 e. Delta H < 0 and Delta S > 0
What is the sign of AU as the system of ideal gas goes from point A to point B on the graph? (Hint the U is function of temperature only for a perfect gas) p (atm) 4 3 2 B V (m3) 1 2 3 4 The states And B have the same internal energy, so delta U is zero The internal energy of the system increases, so delta U is positive The internal energy of the system decreases, so...
T=20 degrees Celsius, T= 273.13+20=293.13
Delta G= Delta H - T×Delta S.
1.What is delta S Using the tables i have provided?
2. What is the significance of the sign Delta S?
*PLEASE SHOW ALL CALCULATIONS*
uBBOsty Part III. Entropy Calculations 1. Use your average AHo and A Go values in The Gibbs-Helmholtz equation (1) to calculate and average ASo value. Also, incorporate your ± values to calculate the precision for Δ. What is the significance of the sign for...
Most questions answered within 3 hours.
-
Carbon disulfide is prepared by heating sulfur and charcoal. The
chemical equation is
S2(g)+C(s)−⇀↽−CS2(g) Kc=9.40 at...
asked 1 minute from now -
complete the problem and solution paragraph below, include 2-3
causes and 2-3 solutions for them.
remember...
asked 24 seconds ago -
I was looking for help with a computer science c programming
class. not c++
This program...
asked 24 minutes ago -
Albinism is an autosomal recessive condition characterized by
absence of melanin pigment from the skin, eye...
asked 14 minutes ago -
Suppose you're looking at a physics example online, and come
across this expression in the middle...
asked 22 minutes ago -
Compile a list (7 or more) of other commands useful for
navigating or manipulating the UNIX/Linux...
asked 31 minutes ago -
How many grams of PbBr2 will precipitate when excess CrBr3
solution is added to 61.0 mL...
asked 34 minutes ago -
If I was given the address of 134.15.0.0/16 from my ISP and I
wanted to use...
asked 38 minutes ago -
What is the pH of the solution that results of dissolving 1.74g
of sodium hydroxide in...
asked 42 minutes ago -
Given a standardized normal distribution (with μ = 0 and a σ =
1), what is...
asked 1 hour ago -
Given the following information:
acetic acid
CH3COOH
Ka = 1.8×10-5
triethylamine
(C2H5)3N
Kb = 5.2×10-4
(1)...
asked 1 hour ago -
Potassium permanganate(KMNO4)is has a solubility of 6.4 g/ 100 g
of water at 20ºC, and 250...
asked 1 hour ago