Purchase Solution

Entropy change: Melt ice-water and heating water fr 0C-25C

Not what you're looking for?

Ask Custom Question

100 g of ice is melted at 0 degree C, and the resulting water is warmed to room temperature (25 degree C). Calculate delta S (change in entropy) for this whole process and comment on the relative magnitude of the entropy changes for the two steps. Explain the sign of delta S.

Purchase this Solution
Solution Summary

A step by step path to a solution to show how to determine the entropy changes by heating and melting 100g of water ice to water and heating the water from 0 to 25 C is shown. This is developed along the paths of first considering a latent heat change and determining the change in heat, thus the change in entropy of this change and the considering the heating of the water and the heat change and associated entropy change with this process.

Solution Preview

Basically what you have to consider here, is two changes:

1) State change Ice to Water (a latent heat change).

2) Heating of the water and the associated temperature change.

A state change where ice is melted i.e. a change from solid (ice) to liquid (water), you will need to determine the amount of heat required for this change.

Call this heat the Latent Heat Delta.Q1 which can be calculated by

Delta.Q1 = ML ,

where M is the mass of the ice in kg which in this case M = 0.1 kg, L is the specific latent heat of water which you will need to ...

Purchase this Solution
Free BrainMass Quizzes
Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Basic Physics

This quiz will test your knowledge about basic Physics.

View More Free Quizzes
Related BrainMass Solutions

  • Calculate the Energy to Melt Ice and Change the Temperature

    317125 Calculate the Energy to Melt Ice and Change the Temperature A glass contains 0.25kg of water at 0c, 0.15kg of ice, also at 0c, is added to water and it is noticed that after 11 minutes all the ice has melted and all the water is now at 15c.

  • Heat: Change in phase and latent heat capacity

    Here ice is to melt and we don't know the final composition of mixture, means we are not certain how much ice will melt of whether the whole ice will melt.

  • Calculate the entropy change

    51888 Calculate the entropy change Calculate the entropy change for heating H2O(s) at -10 degrees C to H2O(l) at 10 degrees C. We need to find entropy for H2O(s) at -10 degrees C and H2O(l) at 10 degrees C.

  • Physics: Entropy Change in Melting of Ice

    273783 Entropy Change in Melting of Ice: Example Problem A 10-2 kg ice cube, initially at zero degrees C, melts in the Atlantic Ocean, where the water temperature is at 10 degrees C.

  • Water Temperature Calculations

    So we end up with 4/3 kg of water at 100C and (2/3) kg steam at 100C b. Every gram of ice will take 80 cal to melt at 0C while every gram of water will have to cool down to 20C to provide the necessary heat.

  • Thermodynamics

    Hints:C = specific heat of water = 4.186 J/gm0K (b) What is the change in entropy for the parts (hot water and cold water) of the system, and for the system as a whole?

  • Spacing of Rails/Removal of Heat

    = 25 ==> q1 = 1800 * 1 * 25 = 45 Kcal Heat removed in converting water at 0C to ice at 0C, q2 = m * Hf wher Hf is the latent heat of fusin of ice = 80 cal/g ==> q2 = 1800 * 80 = 144 Kcal heat removed in cooling ice from 0C to -5C, q3 = m

  • Heat and Thermodynamics: Change of state

    163132 Heat and Thermodynamics: Change of state Please help with the following problem. Provide at least 400 words. Describe the phenomenon of latent heat with respect to the process of heating a block of ice to eventually create steam.

  • Entropy change: Water

    528261 Entropy change: Water 5.2 Calculate the entropy change for each of the following: (a) 10g of steam at l00°C and a pressure of one atmosphere condensing into water at the same temperature and pressure.

View More Related Solutions