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
Alenkasestr [34]
3 years ago
12

Consider the reactionI2(g) + Cl2(g)2ICl(g)Using standard thermodynamic data at 298K, calculate the entropy change for the surrou

ndings when 2.41 moles of I2(g) react at standard conditions.S°surroundings = J/K
Chemistry
1 answer:
Georgia [21]3 years ago
7 0

We know,

\Delta H_{I_2(g)}=62.438\ KJ/mol\\\\\Delta H_{Cl_2(g)}= 0.0\ KJ/mol\\\\\Delta H_{ICl(g)}=17.78\ KJ/mol

For given reaction, I_2(g)+Cl_2(g)\ -->\ 2ICl(g)

\Delta H_{rxn}=2\Delta H_{ICl(g)}-\Delta H_{I_2(g)}-\Delta H_{Cl_2(g)}\\\\\Delta H_{rxn}=2(17.78)-0-62.438\ KJ/mol\\\\\Delta H_{rxn}=-26.878\ KJ/mol

For , 2.41 moles of I_2 :

\Delta H_{rxn}=2.41\times (-26.878)\ KJ\\\\\Delta H_{rxn}=-64.78\ KJ

We know :

\Delta S = -\dfrac{\Delta H_{rxn}}{T}\\\\\Delta S = -\dfrac{-64.78}{298}\ KJ/K\\\\\Delta S =-0.21738 \ KJ/K\\\\\Delta S=-217.38\ J/K

Hence, this is the required solution.

You might be interested in
What are the following equations for each:
m_a_m_a [10]

Answer: thats alot of reading

Explanation:

7 0
2 years ago
You break a pencil lead. Which statement is true?
aalyn [17]

Answer:

  • <em><u>A physical change has occurred, with no energy change.</u></em>

Explanation:

When a pencil lead is broken there is not change of any chemical properties, therefore it is not a chemical change, but just a physical change. In this case the change is just the number of pieces and dimensions.

Chemical changes always involve the formation of new different substances; the bonds between the atoms of the starting substances (reactants) breake and new bonds are formed leading to new substances (products) with different chemical composition (arrange of atoms). Chemical changes occur through chemical reactions.

Hence, if there is not change on the chemical composition, you think on physical changes. Physical changes include change in shape, size, state of matter (e.g. solid, liquid, gas). In the case of a pencil lead breaking, it is a change in shape and size.

Also, since energy has not been absorbed or released during the change, the energy of the pencil lead before having been broken is equal to the sum of the energies of the pieces of pencil lead obtained. So, this is a physical change with no energy changes.

Some examples of physical changes that include change in energy are the change of state (e.g. solid to liquid or liquid to gas) and the dissolution of a compound.

7 0
3 years ago
What's Electro magnetic radiation? ​
Vedmedyk [2.9K]

Answer:

a kind of radiation including visible light, radio waves, gamma rays, and X-rays, in which electric and magnetic fields vary simultaneously.

4 0
2 years ago
True or False
notka56 [123]

Answer:

Explanation:

1.false

2.true

2.true

5 0
2 years ago
What is the name of this formula MnN?
olga_2 [115]
Manganese(III) Nitride
3 0
2 years ago
Other questions:
  • or the solution containing Zn2+(aq), n is 2, so the MM/n ratio will be the molar mass of Zn divided by 2: MM/n = (65.39 g/mol) /
    10·1 answer
  • Sulfanomids warnings ​
    5·1 answer
  • Does the amount of a substance affect the properties of a substance?
    12·1 answer
  • What are the names of the components (each shown with a leader and a line) of a circuit shown in the diagram? Please help!!!!
    8·1 answer
  • The melting point and freezing point of silver are 960 degrees celsius and 2162 degrees celsius, repectively. What is the freezi
    13·1 answer
  • 1. What is the reactant in alcoholic and lactic-acid fermentation?
    5·1 answer
  • Answer #4 and #5 make sure you have proof and will give brainliest
    12·2 answers
  • The pic is the question! Please help
    6·2 answers
  • By what factor would a scuba diver’s lungs expand if she ascended rapidly to the surface from a depth of 125 ft without inhaling
    11·1 answer
  • You are given a cube of lead that is 1.000 cm on each side. The density of lead is 11.35. How many atoms of lead are in the samp
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!