1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Dovator [93]
3 years ago
7

Consider the following chemical equation: NH4NO3(s)⟶NH+4(aq)+NO−3(aq) What is the standard change in free energy in kJmol at 298

.15K? The heat of formation data are as follows: ΔH∘f,NH4NO3(s)=-365.6kJmolΔH∘f,NH+4(aq)=-132.5kJmolΔH∘f,NO−3(aq)=-205.0kJmol The standard entropy data are as follows: S∘NH4NO3(s)=151.1Jmol KS∘NH+4(aq)=113.4Jmol KS∘NO−3(aq)=146.4Jmol K Your answer should include two significant figures.
Chemistry
1 answer:
Galina-37 [17]3 years ago
6 0

Answer:

\Delta _rG=-4.3\frac{kJ}{mol}

Explanation:

Hello,

In this case, for the given dissociation reaction, we can compute the enthalpy of reaction considering the enthalpy of formation of each involved species (products minus reactants):

\Delta _rH=\Delta _fH_{NH^{4+}}+\Delta _fH_{NO_3^-}-\Delta _fH_{NH_4NO_3}\\\\\Delta _rH=-132.5+(-205.0)-(-365.6)=28.1kJ/mol

Next, the entropy of reaction considering the standard entropy for each involved species (products minus reactants):

\Delta _rS=S_{NH^{4+}}+S_{NO_3^-}-S_{NH_4NO_3}\\\\\Delta _rS=113.4+146.4-151.1=108.7J/mol*K

Next, since the Gibbs free energy of reaction is computed in terms of both the enthalpy and entropy of reaction at the given temperature (298.15 K), we finally obtain (two significant figures):

\Delta _rG=\Delta _rH-T\Delta _rS\\\\\Delta _rG=28.1kJ/mol-(298.15 K)(108.7\frac{J}{mol*K}*\frac{1kJ}{1000J}  )\\\\\Delta _rG=-4.3\frac{kJ}{mol}

Best regards.

You might be interested in
Which formula represents 1,2-ethanediol?
Oliga [24]

Answer:

1) C2H4(OH)2

Explanation:

A 1,2-ethanediol has an ethane structure consisting of two Carbon atoms with a hydrogen from each carbon substituted by a hydroxyl group. This makes it a 1,2-diol.

8 0
2 years ago
Please help ASAP I will give 19 points please help
romanna [79]

Answer:

Can you pls clarify this

Explanation:

I dont

3 0
2 years ago
Read 2 more answers
You open the refrigerator and take out a slice of leftover pizza. You put it in the microwave oven, turn it on, and watch for th
Vesnalui [34]

Answer:

C,B,(D or A)

Explanation:

7 0
2 years ago
What forces hold network solids together?
ZanzabumX [31]

Answer:

Covalent solids, also called network solids, are solids that are held together by covalent bonds. As such, they need localized electrons (shared between the atoms) and therefore the atoms are arranged in fixed geometries. Distortion far from this geometry can only occur through a breaking of covalent sigma bonds.

8 0
3 years ago
Protons and neutrons are composed of what?<br> A electrons<br> B.quarks<br> C.ions<br> D.molecules
leonid [27]
B. Quarks is the answer.
6 0
2 years ago
Read 2 more answers
Other questions:
  • Which species has the smaller bond angle, h3o+ or h2o?
    15·1 answer
  • It’s is the same one from my recent ones
    9·1 answer
  • Two elements in the second transition series (y through cd ) have three unpaired electrons in their 3+ ions. what elements fit t
    5·2 answers
  • Determine the number of electrons, neutrons and protons in an atom of arsenic -75.
    14·1 answer
  • _________ is a preparation of raw seafood marinated in an acidic mixture.
    13·1 answer
  • Explain why the following primary substrate undergoes SN1 very rapidly (the OTs is the leaving group)?
    7·1 answer
  • When calculating percent error, the accepted value is in the denominator <br> True or false
    8·2 answers
  • PLEASE HELP!!!!!!!!!!!!!
    14·1 answer
  • Which statement best describes evidence that a chemical reaction occurs as a cake bakes
    11·2 answers
  • Cerebrospinal fluid of the central nervous system and synovial fluid of joint capsules are both examples of _______.
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!