How Do You Calculate Heat Released When Steam Turns to Ice?

AI Thread Summary
To calculate the heat released when steam turns to ice, the process involves several phases: cooling the steam, condensing it to water, cooling the water to freezing point, freezing the water, and cooling the resulting ice. The equation Qlost + Qgained = 0 is relevant, where the heat lost by steam equals the heat gained by the ice. Each phase change and temperature change must be accounted for using the mass, heat capacity, and latent heat values. The specific heat capacity of ice (referred to as "Sice") is also necessary for the calculations. Properly setting up the problem requires careful consideration of each phase and the respective heat transfer equations.
lolphysics3
Messages
9
Reaction score
0

Homework Statement



How much heat is released freezing 75 grams of steam at 110 degrees celcius into ice at -5.1 degree celcius

Homework Equations






The Attempt at a Solution

I tried to do this problem but got an answer like -17101.6J. I don't need you guys to give me an answer but can you suggest how to setup a problem like this? I know Qlost+Qgained=0...so would the 2 phase changes (steam to liquid, liquid to solid) =0?
 
Physics news on Phys.org
Several parts:
- cooling the steam
- condensing the steam to water
- cooling the water to freezing point
- freezing
- cooling the ice
 
So would I have (Msteam*Lheatsteam)+(Mwater*Lheatwater)+(Mice*Lheatice)+(Mice*Sice+change in temp ice)=0?
 
(Mice*Sice+change in temp ice)=0?
Certainly not equal to zero - equal to the heat released that you are trying to find.

I don't know what "Sice" means. I would say
M*C*ΔT for each of the three coolings, where M is the mass, C the heat capacity per kg per degree and ΔT the change in temperature.
 

Thread 'Rolling without slipping on a curved surface'

Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
View full post »

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »

Similar threads

Heat Transfer. Ice and steam in a container (easy)
Replies
2
Views
4K
Reversible Isothermal Expansion Steam
Replies
2
Views
3K
Solving Heat Transfer Problem with Melting Ice Cube
Replies
4
Views
4K
Finding the Value of M in a Physics Homework Problem
Replies
12
Views
2K
Heat question -- Ice cube in a cup of water....
Replies
7
Views
10K
Are theses approaches correct? (entropy change of water turning into steam)
Replies
9
Views
4K
Finding equilibrium temperature when there are phase changes
Replies
2
Views
1K
Heat energy transferred in converting ice into steam
Replies
4
Views
20K
Phase Change Problems: How to Solve for Heat Release and Temperature Changes
Replies
1
Views
5K
How to calculate freezing time for a moist food by-product (75% water)
Replies
6
Views
702

Hot Threads

Recent Insights

Back
Top