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
kherson [118]
3 years ago
11

The change in entropy, Δ????∘rxn , is related to the the change in the number of moles of gas molecules, Δ????gas . Determine th

e change in the moles of gas for each of the reactions and decide if the entropy increases, decreases, or has little or no change. A. K(s)+O2(g) ⟶ KO2(s) Δ????gas= mol The entropy, Δ????∘rxn , increases. has little or no change. decreases. B. CO(g)+3H2(g) ⟶ CH4(g)+H2(g) Δ????gas= mol The entropy, Δ????∘rxn , decreases. increases. has little or no change. C. CH4(g)+2O2(g) ⟶ CO2(g)+2H2O(g) Δ????gas= mol The entropy, Δ????∘rxn , has little or no change. decreases. increases. D. N2O2(g) ⟶ 2NO(g)+O2(g) Δ????gas= mol The entropy, Δ????∘rxn , decreases. increases. has little or no change.
Chemistry
1 answer:
Georgia [21]3 years ago
3 0

Answer:

A. ΔS°rxn decreases

B. ΔS°rxn decreases

C. ΔS°rxn has little or no change

D. ΔS°rxn increases

Explanation:

The change in entropy (ΔS°rxn) is related to the change in the number of moles of gases (Δn(gas) = n(gas products) - n(gas reactants)). If the number of moles of gases increases, there are more possible microstates and entropy increases. The opposite happens when there are less gaseous moles. And little or no change in entropy is expected when the number of moles of reactants and products is the same.

<em>A. K(s) + O₂(g) ⟶ KO₂(s)</em>

Δn(gas) = 0 - 1 = -1

ΔS°rxn decreases

<em>B. CO(g)+ 3 H₂(g) ⟶ CH₄(g) + H₂O(g)</em>

Δn(gas) = 2 - 4 = -2

ΔS°rxn decreases

<em>C. CH₄(g) + 2 O₂(g) ⟶ CO₂(g)+ 2 H₂O(g)</em>

Δn(gas) = 3  - 3 = 0

ΔS°rxn has little or no change

D. N₂O₄(g) ⟶ 2 NO(g) + O₂(g)

Δn(gas) = 3 - 1 = 2

ΔS°rxn increases

You might be interested in
Which compound has the strongest hydrogen bonding between its molecules?
GrogVix [38]
(3) HF because HCl is an acid and it seperates easily into water. Flourine has the highest electronegativity so im guessing because it pulls the electrons the hardest that it has the strongest bonds.
6 0
3 years ago
Are alkali metals good or not good to use as utensils when eating?
nekit [7.7K]

Answer:

no

Explanation:

"Alkali metals are among the most reactive of all metals, which makes them suitable for specific and limited uses.

Alkali metals include lithium, sodium, potassium, rubidium, cesium and francium. These metals have large atomic radii and generally lose electrons during reactions. "

- Reference

8 0
3 years ago
Which of the following is altered by a catalyst?
Vika [28.1K]
<span>In chemistry, a catalyst can speed up the reaction (or make it initiate easier) by altering the activation energy, lowering it enough to allow the reactants to react more easily. Some negative catalysts or inhibitors can do the same by increasing the activation energy.
</span>
4 0
3 years ago
Is water an element compound or mixture
timama [110]
It is a Compound.

Water can't be a mixture because it is chemically bonded and cannot be separated into H2 and O by physical means.

And water cannot be an element, because it is made of atoms of different types [H and Oxygen]
4 0
3 years ago
What two molecules make up sucrose?
SOVA2 [1]

Answer:

glucose and fructose

Explanation:

Sucrose is a disaccharide (a kind of sugar made of two monosaccharides) made of glucose and fructose

7 0
2 years ago
Other questions:
  • Which statement describes how this graph would change if the reaction could be made to go faster?
    7·1 answer
  • Where is the location of the non-metals on the periodic table​
    9·2 answers
  • Can anyone tell me about sulfuric acid in shampoo/soap?
    14·1 answer
  • Which system of measurement does the U.S. use?????
    6·1 answer
  • Am i correct if not correct me please
    12·1 answer
  • Which Domains would you find single cell organisms
    10·1 answer
  • What is the IUPAC name for the following compound?
    5·1 answer
  • Fusion is safer than fussion because....
    6·1 answer
  • What are adipoyl chloride used for or uses?
    15·1 answer
  • The table lists properties of a few known elements, but the states of matter and melting points are missing. Look up the element
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!