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
navik [9.2K]
3 years ago
12

Nitric oxide reacts with chlorine to form nocl. the data refer to 298 k. 2no(g) + cl2(g) → 2nocl(g) substance: no(g) cl2(g) nocl

(g) ∆h°f (kj/mol): 90.29 0 51.71 ∆g°f (kj/mol): 86.60 0 66.07 s°(j/k·mol): 210.65 223.0 261.6 what is the value of ∆g° fo this reaction at 550 k?
Chemistry
1 answer:
tigry1 [53]3 years ago
4 0

Answer:

- 10.555 kJ/mol.

Explanation:

∵ ∆G°rxn = ∆H°rxn - T∆S°rxn.

Where, ∆G°rxn is the standard free energy change of the reaction (J/mol).

∆H°rxn is the standard enthalpy change of the reaction (J/mol).

T is the temperature of the reaction (K).

∆S°rxn is the standard entorpy change of the reaction (J/mol.K).

  • Calculating ∆H°rxn:

∵ ∆H°rxn = ∑∆H°products - ∑∆H°reactants

<em>∴ ∆H°rxn = (2 x ∆H°f NOCl) - (1 x ∆H°f Cl₂) - (2 x ∆H°f NO) </em>= (2 x 51.71 kJ/mol) - (1 x 0) - (2 x 90.29 kJ/mol) = - 77.16 kJ/mol.

  • Calculating ∆S°rxn:

∵  ∆S°rxn = ∑∆S°products - ∑∆S°reactants

<em>∴ ∆S°rxn = (2 x ∆S° NOCl) - (1 x ∆S° Cl₂) - (2 x ∆S° NO) </em>= (2 x 261.6 J/mol.K) - (1 x 223.0 J/mol.K) - (2 x 210.65 J/mol.K) =<em> - 121.1 J/mol.K. = - 0.1211 kJ/mol.K.</em>

<em></em>

  • Calculating ∆G°rxn:

∵ ∆G°rxn = ∆H°rxn - T∆S°rxn.

<em>∴ ∆G°rxn = ∆H°rxn - T∆S°rxn </em>= (- 77.16 kJ/mol) - (550 K)(- 0.1211 kJ/mol.K) = <em>- 10.555 kJ/mol.</em>

You might be interested in
How can atoms be neutral if they contain charged particles?
rewona [7]
Stability of atoms is determined by neutron:proton ratio. This n/p ratio is 1:1 for elements below atomic number 20. Hope this helps.
4 0
3 years ago
The compound magnesium iodide is a strong electrolyte write the reaction when solid magnesium iodide is put into water
mestny [16]
  The  reaction  for magnesium  iodide  when put into water  is  as below

 MgI2(s) →  Mg^2+(aq)   + 2I^-(aq)

when  magnesium iodide  but into water it dissociate/ ionize  completely  into  Mg^2+  and  2l^-   ions. Magnesium iodide dissociate/ionize  completely because  magnesium  iodide  is a strong electrolyte  which  dissociate/ ionize  completely into their ions  when it is put into   water .
7 0
3 years ago
What information can be obtained from a chemical formula?
Nookie1986 [14]
The chemical properties, chemical reactivity
3 0
3 years ago
Hera much hydrogen-3 wil remain after 60 years if the original sample had a mass of 100.0 g and the half-life of hydrogen-3 is 1
Ber [7]
12 g would be the answer to this question
6 0
3 years ago
Why is blood considered to be a suspension?
horrorfan [7]
Because there are several kind of cells in the blood, like red blood cell and white blood cell. They flow in the blood and will not precipitate, So it is called suspension.
4 0
2 years ago
Other questions:
  • The substance that burns in a combustion reaction is called the
    7·1 answer
  • I need to know how to solve this entire thing I don’t know where to start
    14·1 answer
  • _______ the atomic number is the same number of these particles?
    11·1 answer
  • who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing elements?
    9·2 answers
  • An ion is:
    15·2 answers
  • How did mendeleev arrange atoms in the periodic table?
    10·1 answer
  • Are the cells in this image prokaryotic or eukaryotic
    13·1 answer
  • What is the definition of a catalyst?
    13·1 answer
  • Explain how how radioactive decay can result in one element changing into another?
    14·1 answer
  • PLEASE HELP ME<br> What answer is it?
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!