A simple experiment can be carried out to note the ice point of water and understand the concept of latent heat of fusion. Take some pure ice in a beaker and place a thermometer in it as shown in the figure given below. At normal atmospheric pressure, as the ice starts to melt, the temperature is noted to be 0Â°C and it remains constant at that temperature until all the ice melts into liquid water. After this, the temperature of water starts to rise above 0Â°C.
The latent heat of fusion arises from the work required to overcome the forces that hold the molecules of ice together. As the ice melts, the temperature remains constant at 0Â°C. The heat given by the surrounding air is used to break the crystal structure of ice. A crystal structure is maintained by forces of attraction that hold the individual oscillating atoms in their average positions. As heat is supplied to the system, the oscillations gradually become violent and at the melting point the forces of attraction are no longer sufficient to maintain the crystal structure. Thus, the latent heat of fusion is used to complete the transition to the liquid state.
Effect of Pressure and Impurities
The ice point of water is 0Â°C or 32Â°F at normal atmospheric pressure. However, if there are impurities present in the solution or if the atmospheric pressure is not 1, then the value of the ice point changes.
Â· Pressure: If the pressure is increased on the system, the molecules are forced to come closer. As water takes up the lesser volume as compared to ice, an increase in pressure leads to faster melting of ice into water. Thus the ice point is lowered. For example, if the pressure is maintained at 2,000 atm, water can supercool to as low as -70Â°C before turning into ice.
Â· Impurities: The addition of impurities on the ice below 0Â°C leads to a depression in the melting point. Thus, the temperature drops further and the ice melts faster into the water in the presence of impurities. This is why salt is added as an impurity on frozen streets, which melts the ice, even at temperatures below 0Â°C.
Why Work with Us
Top Quality and Well-Researched Papers
We always make sure that writers follow all your instructions precisely. You can choose your academic level: high school, college/university or professional, and we will assign a writer who has a respective degree.
Professional and Experienced Academic Writers
We have a team of professional writers with experience in academic and business writing. Many are native speakers and able to perform any task for which you need help.
Free Unlimited Revisions
If you think we missed something, send your order for a free revision. You have 10 days to submit the order for review after you have received the final document. You can do this yourself after logging into your personal account or by contacting our support.
Prompt Delivery and 100% Money-Back-Guarantee
All papers are always delivered on time. In case we need more time to master your paper, we may contact you regarding the deadline extension. In case you cannot provide us with more time, a 100% refund is guaranteed.
Original & Confidential
We use several writing tools checks to ensure that all documents you receive are free from plagiarism. Our editors carefully review all quotations in the text. We also promise maximum confidentiality in all of our services.
24/7 Customer Support
Our support agents are available 24 hours a day 7 days a week and committed to providing you with the best customer experience. Get in touch whenever you need any assistance.
Try it now!
How it works?
Follow these simple steps to get your paper done
Place your order
Fill in the order form and provide all details of your assignment.
Proceed with the payment
Choose the payment system that suits you most.
Receive the final file
Once your paper is ready, we will email it to you.
No need to work on your paper at night. Sleep tight, we will cover your back. We offer all kinds of writing services.
No matter what kind of academic paper you need and how urgent you need it, you are welcome to choose your academic level and the type of your paper at an affordable price. We take care of all your paper needs and give a 24/7 customer care support system.
Admission Essays & Business Writing Help
An admission essay is an essay or other written statement by a candidate, often a potential student enrolling in a college, university, or graduate school. You can be rest assurred that through our service we will write the best admission essay for you.
Our academic writers and editors make the necessary changes to your paper so that it is polished. We also format your document by correctly quoting the sources and creating reference lists in the formats APA, Harvard, MLA, Chicago / Turabian.
If you think your paper could be improved, you can request a review. In this case, your paper will be checked by the writer or assigned to an editor. You can use this option as many times as you see fit. This is free because we want you to be completely satisfied with the service offered.