Calculate the entropy, Physics

Assignment Help:

1. Sodium dodecyl sulfate is a detergent with a charged hydrophilic sulfate head group and a 12 carbon hydrocarbon tail.  In solid form it exists as a monomeric molecule but upon dissolving in water at room temperature (298 K) it assembles spontaneously (ΔG = -16.4 kJ/mol) into a higher ordered micelle with the structure shown below.

2290_Create a simple static web page3.png

A. Measurements of this process at room temperature show an enthalpy of micelle formation (ΔH) of -1.42 kJ/mol.  Calculate the entropy for this reaction.  Is micelle formation accompanied by an increase or decrease in the disorder of the system?  Explain your answer.

B. Micelle formation is a good example of what type of noncovalent interaction?

C. Micelle formation in the presence of 0.5 M NaCl results in a more negative ΔH value of -8.49 kJ/mol with no further change in entropy compared to micelle formation in water.  Is micelle formation more energetically favored in water or 0.5 M NaCl?  What noncovalent interaction could account for this change in enthalpy?


Related Discussions:- Calculate the entropy

Determine a hollow metallic sphere, A hollow METALLIC sphere has an inner r...

A hollow METALLIC sphere has an inner radius A and an outer radius B.  If charge is placed on the inner surface, that is at radius A, where is the charge located after it has c

How many types does heat transfer, How many types does heat transfer? ...

How many types does heat transfer? There are three ways of heat tranfer. a) Conduction (transfer of heat among objects in direct contact) b) Convection (transfer of he

Volumetric coefficient of thermal expansion, In thermodynamics, the Joule-T...

In thermodynamics, the Joule-Thomson effect describes a process in which a fluid is forced through a valve or porous plug while kept insulated so that no heat is exchanged with the

PHYSICS, WHAT IS THE MEAN OF HEAT

WHAT IS THE MEAN OF HEAT

The time base control 3, The Time Base Control 3 Shows the effect of ch...

The Time Base Control 3 Shows the effect of changing the time base control on the display when there is an input voltage varying in time when the frequency of the voltage is hi

An elementary particle, An elementary particle is: (1)An element presen...

An elementary particle is: (1)An element present in a compound      (2)An atom present in an element   (3)A sub-atomic particle (4)A fragment of an atom Ans: (3)A s

Electricity, help by post offoce box explan rasistance of a wire

help by post offoce box explan rasistance of a wire

The force is in newton, The force is in Newton The buoyant (upward) for...

The force is in Newton The buoyant (upward) force exerted by water on a submerged object is given by the formula F= ?Vg, where ? is the density of water (1.0 x 10 3 kg/m 3 ),

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