Explain the heating curve for water, Chemistry

Assignment Help:

Q. Explain the Heating curve for water?

Ans.

When a substance is heated, it undergoes several phase changes. A heating curve is a diagram which illustrates the phase changes that occur when a substance is heated. Let us look at the phase changes that occur when water is heated by examining its heating curve:

1822_heating curve for water.jpg

Note that the melting and boiling processes require the addition of a specific amount of energy to break the forces holding the water molecules together. When a liquid solidifies or condenses, the opposite occurs: energy is released.

The amount of heat required for melting is known as the heat of fusion. For example, the heat of fusion of water is 80 cal/g.

Similarly, the amount of heat required for boiling is known as the heat of vaporization. The heat of vaporization for water is 540 cal/g.


Related Discussions:- Explain the heating curve for water

What is the activation center of an enzyme, Is it the key or the lock of th...

Is it the key or the lock of the lock and key model? Ans) The activation center is a region of the enzyme formed by its spatial conformation to which the substrate binds. In the

#first class, how do i make a first class in chemistry, secondly in nigeria...

how do i make a first class in chemistry, secondly in nigeria chemistry is based on too much theory. how do i make it in this case?

Unpaired electrons are present in cobalt, How many unpaired electrons are p...

How many unpaired electrons are present in cobalt [Co] metal: (1) 2        (2) 3        (3) 4        (4) 7 Ans: 3

Yield, Hi I need ur help Thank you CuCo3+2HCl=CuCl2+CO3+H2O What mass of c...

Hi I need ur help Thank you CuCo3+2HCl=CuCl2+CO3+H2O What mass of cucl2 with react completely with 20 cm3 of 2000 mol cm3 of HCl? Calculate the % yield if 8.5g of chloride was pro

Molecular formula of gaseous hydrocarbons or eudiometry, Molecular formula ...

Molecular formula of gaseous hydrocarbons   (Eudiometry) Eudiometry is a direct method for calculation of molecular formula of gaseous hydrocarbons without ascertaining the pe

What is the new volume of the gas, 0.47 moles of Sodium were reacted with 2...

0.47 moles of Sodium were reacted with 26g of Copper(II) Nitrate? If the actual yield of copper metal was 1.43g, what is the percentage yield of this reaction? 2. What is the equiv

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd