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
Andrej [43]
3 years ago
14

ΔG o for the reaction H2(g) + I2(g) ⇌ 2HI(g) is 2.60 kJ/mol at 25°C. Calculate ΔG o , and predict the direction in which the rea

ction is spontaneous. The initial pressures are: PH2 = 3.10 atm PI2 = 1.5 atm PHI 1.75 atm ΔG o = The reaction is spontaneous in the forward direction. The reaction is spontaneous in the reverse direction. Cannot be determined.
Chemistry
1 answer:
kondaur [170]3 years ago
4 0

Answer:

The reaction is not spontaneous in the forward direction, but in the reverse direction.

Explanation:

<u>Step 1: </u>Data given

H2(g) + I2(g) ⇌ 2HI(g)     ΔG° = 2.60 kJ/mol

Temperature = 25°C = 25+273 = 298 Kelvin

The initial pressures are:

pH2 = 3.10 atm

pI2 = 1.5 atm

pHI 1.75 atm

<u>Step 2</u>: Calculate ΔG

ΔG = ΔG° + RTln Q  

with ΔG° = 2.60 kJ/mol

with R = 8.3145 J/K*mol

with T = 298 Kelvin

Q = the reaction quotient → has the same expression as equilibrium constant → in this case Kp = [p(HI)]²/ [p(H2)] [p(I2)]

with pH2 = 3.10 atm

pI2 = 1.5 atm

pHI 1.75 atm

Q = (3.10²)/(1.5*1.75)

Q = 3.661

ΔG = ΔG° + RTln Q  

ΔG = 2600 J/mol + 8.3145 J/K*mol * 298 K * ln(3.661)  

ΔG =5815.43 J/mol = 5.815 kJ/mol

To be spontaneous, ΔG should be <0.

ΔG >>0 so the reaction is not spontaneous in the forward direction, but in the reverse direction.

You might be interested in
How could the survivors about starting a fire?
joja [24]

Answer:

The ancient Greeks believed that fire was one the four basic elements that composed all things in the universe. In the mythology of virtually every culture, fire is a sacred substance that gives life or power. Fire is not, in fact, a substance. When you gaze at the leaping flames of a campfire, you’re observing not an object, but a process – a chemical reaction. It’s the same chemical reaction that occurs when a cut apple left on the counter turns brown, when silver tarnishes or when an iron nail rusts.

That process is oxidation: combining oxygen with another substance. The defining difference between a fire and your half-eaten apple is speed: fire is an oxidation process that happens very fast, so that light, heat and sound are released — often with enough force and majesty to justify the ancients’ reverence.The sudden release of energy causes temperatures to rise, sometimes by thousands of degrees. And it also results in smoke, the toxic waste of fire’s leftovers.

The fire triangle and the fire tetrahedron

Fire TetrahedronThe fire triangle identifies the three needed components of fire:

fuel (something that will burn)

heat (enough to make the fuel burn)

and air (oxygen)

Explanation: i hope this helps sry its long

6 0
3 years ago
Which structure assist with cell ur respiration?
Alexandra [31]

Answer:

Mitochondria

Explanation:

Mitochondria are organelles whose membranes are specialized for aerobic respiration.

4 0
2 years ago
Determine the oxidation number of CI element in each of the following species:
labwork [276]
Fbbrnev said he was still in a coma and he said he was still in a coma and
3 0
3 years ago
Which is the process by which plants convert light energy into chemical energy?
Ivanshal [37]
This process is called photosynthesis
4 0
3 years ago
Read 2 more answers
Which is one way that topographic maps are different from other maps?
anzhelika [568]
One way they are different is that they show elevation
5 0
3 years ago
Read 2 more answers
Other questions:
  • The [H3O+] in a solution is increased to twice the original concentration. Which change could occur in the pH? 2.0 to 4.0 1.7 to
    14·2 answers
  • Explain how atoms(ions) are held together in an ionic bond. Give an example of an ionic compound
    7·2 answers
  • In which reaction would the activation energy result in an endothermic reaction?
    14·2 answers
  • Mixtures are different from compounds because compounds have to be
    7·2 answers
  • Question 3 (11 points)
    8·1 answer
  • What mass of H2SO, is required to react completely with 50.0 grams of ammonia (NH3)?​
    7·1 answer
  • 2)What is the downside to having concrete as the second most consumed<br> resource in the world?
    11·1 answer
  • What is the formula for tin(III) sulfate​
    12·2 answers
  • Tính số nguyên tử oxi
    8·1 answer
  • A piece of metal is cooled in a water calorimeter. This process increases the water temperature by 7.0°C. How much energy is los
    8·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!