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
Mariulka [41]
3 years ago
14

When water is added to a mixture Na_2O_2(s) and S(s), a redox reaction occurs, as represented by the equation below.

Chemistry
1 answer:
BARSIC [14]3 years ago
8 0

Answer:

(C) It is favorable and is driven by ΔH° only.

Explanation:

Let's consider the following balanced equation.

2 Na₂O₂ + S + 2 H₂O → 4 NaOH + SO₂

To determine whether it will be favorable or not at 298 K, we need to calculate the standard Gibbs free energy (ΔG°).

  • If ΔG° < 0, the reaction will be favorable.
  • If ΔG° > 0, the reaction will be unfavorable.

We can calculate ΔG° using the following expression.

ΔG° = ΔH° - T.ΔS°

As we can see from the expression above, the favorability will be driven if ΔH° < 0 and if ΔS° < 0. Since ΔH° = -610 kJ/mol and ΔS° = -73 J/K.mol, the favorability will be driven by ΔH°. Now, let's calculate the overall favorability.

ΔG° = ΔH° - T.ΔS°

ΔG° = -610 kJ/mol - 298 K.(-0.073 kJ/K.mol) = -588 kJ/mol

The reaction is favorable and is driven by ΔH° only.

You might be interested in
Write a hypothesis about the pH level of common household solutions based on what you know about their physical and chemical pro
docker41 [41]

If pH is less than seven (pH<7), solution is acidic.

If pH is equal seven (pH = 7), solution is neutral.  

If pH is greater than seven (pH > 7), solution is basic.  

Some examples:

1) Acidic - gastric juices pH 1, lemon juice pH 2.2, tomato juice pH 4.

2) Neutral - salt solution pH 7.

3) Alkaline - baking soda pH 9, bleach pH 13.

pH is a numeric scale used to specify the acidity or basicity of an aqueous solution.



5 0
3 years ago
Read 2 more answers
Which is a heterogeneous mixture a jar of nuts
pogonyaev

Answer:

a party mix:-) it would be a jar of cashews, peanuts, almonds, ettc.

Explanation:

if you can separate the nuts, it is heterogenous

6 0
3 years ago
An atom has 25 protons,20 neutrons, and 19 electrons.Which atom is this,What is the atom's mass number?
ladessa [460]
The atomic mass is 45
6 0
3 years ago
Read 2 more answers
What happens after sound waves create vibrations in the ear?​
otez555 [7]

Explanation:

3 little bones in ear takes that vibration and empowers them. Then they transfer the vibrations to next part of ear.

7 0
3 years ago
Write three sentences that provide evidence supporting your claim about how the illustration and student observations support th
Ksenya-84 [330]

Answer:

The cell theory claims these three components:

1. cell is the smallest functional unit of life: It can be observed under the microscope that cells have various type of molecules and organelles present and have adifferent functional role in the cell which explains that the cell is the smallest unit of life as its molecules or organelles can not carry the life process on their own.

2. All organisms are made up of cells: From bacteria and archaea to human and other life forms are made up of a single cell or organization of cells in a specific pattern it also can be observed by the microscopic of blood or other tissue or cell of an organism.

3. Arise from pre-existing cell: The cells are can be studied under a microscope during cell division where we can observe that new cells come from the pre existing cell by the cell division.

5 0
3 years ago
Other questions:
  • Arrange the processes of the water cycle in the correct order, starting with the heat from the Sun.
    13·1 answer
  • Cuál será la masa molar de una sustancia donde 7 g equivalen a 0,25 mol
    6·1 answer
  • You have a vial that may contain lead(II) cations or barium cations, but not both. Available to you are solutions of ammonium su
    10·1 answer
  • When the volume of a gas is changed from 524 cm^3 to ____ cm^3, the temperature will change from 491 K to 297 K .
    14·2 answers
  • A 2.17 gm sample barium reacted completely with water what is the equation for the reaction how many milliliters of dry H2 evole
    8·1 answer
  • What holds strands of peptidoglycan together??
    8·1 answer
  • Astatine, At, is below iodine in Group 17 of the Periodic Table. Which statement is most likely to be correct?
    8·1 answer
  • A wavelength is the___<br> of one ____ ____
    9·1 answer
  • A blacksmith is in the process of making iron horse shoes. Each shoe, mass of 255.15g, is heated to a bright red (816c), hammere
    9·2 answers
  • A 250ml glass of orange juice contains 22 grams of sugar. how much sugar is in a 2 liter (2.500ml) bottle of orange juice?
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!