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A mixture of 60% hydrogen and 40% oxygen is blowing over a pan of water at 1atm pressure. The bulk gas temperature is 30°c and the water temperature is 20°C. The vapor pressure of water at this temperature is 17.53mm Hg. The concentration of moisture in the bulk gas is negligible and the diffusivity values are DO2-H2O=0.357cm2/s,DH2-H2O=0.972cm2/s at 34°C and DH2-O2=0.891cm2/s at 43°C.
Q. What will be the values of the diffusivities (in cm2/s) at the mean gas-film temperature?
  • a)
    0.923,0.267
  • b)
    0.483,1.351
  • c)
    0.294,0.368
  • d)
    1.381,0.364
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A mixture of 60% hydrogen and 40% oxygen is blowing over a pan of wate...
Explanation: Use the relation D∝T1.75
Mean gas-film temperature= (30+20)/2=25°C.
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Most Upvoted Answer
A mixture of 60% hydrogen and 40% oxygen is blowing over a pan of wate...
°C. Assuming ideal gas behavior, calculate the partial pressure of each gas and the total pressure of the mixture.

To calculate the partial pressure of each gas, we can use the Dalton's Law of Partial Pressures, which states that the total pressure of a mixture of ideal gases is equal to the sum of the partial pressures of each gas.

Given:
- Mixture composition: 60% hydrogen and 40% oxygen
- Total pressure: 1 atm
- Bulk gas temperature: 30°C

First, we need to convert the temperature from Celsius to Kelvin:
Bulk gas temperature = 30°C + 273.15 = 303.15 K

Let's calculate the partial pressure of hydrogen:
Partial pressure of hydrogen = 0.60 * Total pressure
Partial pressure of hydrogen = 0.60 * 1 atm = 0.60 atm

Now, let's calculate the partial pressure of oxygen:
Partial pressure of oxygen = 0.40 * Total pressure
Partial pressure of oxygen = 0.40 * 1 atm = 0.40 atm

Finally, the total pressure of the mixture is equal to the sum of the partial pressures of each gas:
Total pressure = Partial pressure of hydrogen + Partial pressure of oxygen
Total pressure = 0.60 atm + 0.40 atm = 1 atm

Therefore, the partial pressure of hydrogen is 0.60 atm, the partial pressure of oxygen is 0.40 atm, and the total pressure of the mixture is 1 atm.
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A mixture of 60% hydrogen and 40% oxygen is blowing over a pan of water at 1atm pressure. The bulk gas temperature is 30°c and the water temperature is 20°C. The vapor pressure of water at this temperature is 17.53mm Hg. The concentration of moisture in the bulk gas is negligible and the diffusivity values are DO2-H2O=0.357cm2/s,DH2-H2O=0.972cm2/s at 34°C and DH2-O2=0.891cm2/s at 43°C.Q. What will be the values of the diffusivities (in cm2/s) at the mean gas-film temperature?a)0.923,0.267b)0.483,1.351c)0.294,0.368d)1.381,0.364Correct answer is option 'A'. Can you explain this answer?
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A mixture of 60% hydrogen and 40% oxygen is blowing over a pan of water at 1atm pressure. The bulk gas temperature is 30°c and the water temperature is 20°C. The vapor pressure of water at this temperature is 17.53mm Hg. The concentration of moisture in the bulk gas is negligible and the diffusivity values are DO2-H2O=0.357cm2/s,DH2-H2O=0.972cm2/s at 34°C and DH2-O2=0.891cm2/s at 43°C.Q. What will be the values of the diffusivities (in cm2/s) at the mean gas-film temperature?a)0.923,0.267b)0.483,1.351c)0.294,0.368d)1.381,0.364Correct answer is option 'A'. Can you explain this answer? for Chemical Engineering 2024 is part of Chemical Engineering preparation. The Question and answers have been prepared according to the Chemical Engineering exam syllabus. Information about A mixture of 60% hydrogen and 40% oxygen is blowing over a pan of water at 1atm pressure. The bulk gas temperature is 30°c and the water temperature is 20°C. The vapor pressure of water at this temperature is 17.53mm Hg. The concentration of moisture in the bulk gas is negligible and the diffusivity values are DO2-H2O=0.357cm2/s,DH2-H2O=0.972cm2/s at 34°C and DH2-O2=0.891cm2/s at 43°C.Q. What will be the values of the diffusivities (in cm2/s) at the mean gas-film temperature?a)0.923,0.267b)0.483,1.351c)0.294,0.368d)1.381,0.364Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Chemical Engineering 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A mixture of 60% hydrogen and 40% oxygen is blowing over a pan of water at 1atm pressure. The bulk gas temperature is 30°c and the water temperature is 20°C. The vapor pressure of water at this temperature is 17.53mm Hg. The concentration of moisture in the bulk gas is negligible and the diffusivity values are DO2-H2O=0.357cm2/s,DH2-H2O=0.972cm2/s at 34°C and DH2-O2=0.891cm2/s at 43°C.Q. What will be the values of the diffusivities (in cm2/s) at the mean gas-film temperature?a)0.923,0.267b)0.483,1.351c)0.294,0.368d)1.381,0.364Correct answer is option 'A'. Can you explain this answer?.
Solutions for A mixture of 60% hydrogen and 40% oxygen is blowing over a pan of water at 1atm pressure. The bulk gas temperature is 30°c and the water temperature is 20°C. The vapor pressure of water at this temperature is 17.53mm Hg. The concentration of moisture in the bulk gas is negligible and the diffusivity values are DO2-H2O=0.357cm2/s,DH2-H2O=0.972cm2/s at 34°C and DH2-O2=0.891cm2/s at 43°C.Q. What will be the values of the diffusivities (in cm2/s) at the mean gas-film temperature?a)0.923,0.267b)0.483,1.351c)0.294,0.368d)1.381,0.364Correct answer is option 'A'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemical Engineering. Download more important topics, notes, lectures and mock test series for Chemical Engineering Exam by signing up for free.
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