Download the App!
Get 24/7 study help with the Numerade app for iOS and Android! Enter your email for an invite.
Get the answer to your homework problem.
Try Numerade free for 7 days
Like
Report
Heat is released when some solutions form; heat is absorbed when other solutions form. Provide a molecular explanation for the difference between these two types of spontaneous processes.
In case of solution which release heat, sum of bond energies of the reactants is less than sum ofbond energies of the product. Since there is a surplus of energy, it is released in form of heat.In case of solution which absorb heat, sum of bond energies of the reactants is greater than sumof bond energies of the product. Since there is a dearth of energy, it is absorbed in form of heat.
01:07
Aadit S.
Chemistry 102
Chapter 11
Solutions and Colloids
Solutions
University of Kentucky
Brown University
Lectures
03:58
In chemistry, a solution i…
05:06
In physics and thermodynam…
00:48
As you know, some solution…
00:25
What are the mechanisms of…
01:17
What is heat? How does hea…
03:22
Explain what is meant by a…
02:31
Distinguish between the te…
01:29
Describe a situation in wh…
03:13
Describe two exothermic pr…
00:55
Explain how energy changes…
01:10
When heat transfers into a…
03:06
Explain the difference bet…
05:20
How does the entropy of th…
00:18
UNDERSTANDING KEY IDEAS
00:29
Under what conditions is a…
01:21
Define these terms: thermo…
What is heat? Explain the …
0:00
01:58
Describe the ways in which…
How does heat differ from …
01:38
Explain the differences am…
If heat is absorbed during the formation of a solution, we can provide a molecular explanation based upon the types of inter molecular forces found between the solute and solvent with heat being absorbed, then energy is required for the process to occur. It always requires more energy to pull apart molecules that are strongly held together with strong inter molecular forces than it is to pull apart molecules with weak inter molecular forces. So if heat is absorbed, this suggests that the inter molecular forces of the solution are weaker than the inter molecular forces of the solute and solvent separate. The heat then is what is needed in order to pull apart the salute salute or to overcome the salute salute interaction and the solvent solvent interaction so that the weaker solute solvent interaction can occur essentially when heat is absorbed, weaker interactions are formed. If heat is released, then we are going to a lower energy state. A lower energy state corresponds to stronger forces of attraction. So when he is released the total inter molecular forces of the solution and the salt of the solution with the solute and solvent mixed are stronger than the total inter molecular forces of the separate, pure solute and solvent. These stronger forces result in the release of energy as heat.
View More Answers From This Book
Find Another Textbook
Numerade Educator
In chemistry, a solution is a homogeneous mixture composed of two or more su…
In physics and thermodynamics, the natural tendency of a system to change it…
00:46
From the labels of several commercial products, prepare a list of six ionic …
02:48
Methanol, H3COH, is used as the fuel in some race cars. Ethanol, C2H5OH, is …
Use scientific (exponential) notation to express the following quantities in…
01:47
Suggest an explanation for the observations that ethanol, $\mathrm{C}_{2} \m…
01:37
What is the freezing temperature of a solution of 115.0 $\mathrm{g}$ of sucr…
If molecular orbitals are created by combining five atomic orbitals from ato…
04:17
Write the formulas of the following compounds:
(a) lithium carbonate…
Calculate the density of aluminum if 27.6 $\mathrm{cm}^{3}$ has a mass of 74…
01:22
For a given amount of gas showing ideal behavior, draw labeled graphs of:
02:17
To prepare for a laboratory period, a student lab assistant needs 125 g of a…
