List three reasons why an experimentally measured reduction potential would not equal the theoretical reduction potential.

How to make Catalyst?

Example of making Gama Al₂O₃/Ni/Cu/Fe,

How we know the composition, and how many Ni/Cu/Fe is given to make the catalyst??

A continuous fractionating column operating at atmospheric pressure, is to be designed to separate a mixture containing 40% carbon disulfide (CS₂ ) and 60% Carbon tetra chloride (CCl₄ ) into an overhead product containing 95% w.w CS₂ and 97% CCl₄ waste. (All weight percent).

Complete the material balance around the column? All results should be in mole and mole percent (Not in weight percent).

1. Draw a process flowchart

2. Write balances around the column based on CS₂ and CCl₄.

3. Determine the expected mole fraction and mole flow rate for all streams; feed, top and bottom of the column.

from the DePrestier Chart at 50 psi , the temperature in deg. F pure propane boils at is

Write short notes on ASTM & TBP distillation?

1.What do you see as the long term impacts of damaging species on the ecosystems of North America? Explain. Give examples.  

2.Do wildlife diseases impact endangered species? Explain. Give examples. 

3.Are traps lethal or non-lethal devices? Explain your answer, use specific examples. 

4.How important is the experience of the practitioner in using traps or snares to catch a coyote? Explain. 

Problem 1.

Derive an expression for the mixing entropy ∆Smix of a ternary system.

Simplify your result, writing it as the total number of particles N times a purely intensive function of the mole fractions of all three components.

Humid air at 70.0 °C and 1.00 atm with 2.00 °C of superheat is fed to a condenser. Gas and liquid streams leave the condenser in equilibrium at 15.0 °C and 1.00 atm.

Use material balances to determine the following quantities for a basis of 100.0 mol of warm, humid air fed to the condenser.

In a power plant based on a simple Rankine cycle, steam enters the turbine at 15 MPa and 900°C. The condenser pressure is 5 kPa. The turbine operates adiabatically and has an isentropic efficiency of 85%, and the pump also operates adiabatically and has an isentropic efficiency of 80%. Determine

1. the work required to pump the water to the boiler in kJ/kg of water flowing, and

2. the enthalpy of the water leaving the pump.

Ethylene glycol at 40 degree C flows along a heated vertical plate L = 0.5 m long and is maintained at a uniform temperature of 80 degree C. Determine the minimum flow velocity below which the effect of free convection on heat transfer becomes more than 5 percent. (For ethylene glycol take Pr = 50.)

Define, describe and explain the following with graphical representations:

(a) Equilibrium

(b) Phase in a material

(c) Degrees of freedom for a material system

(d) Cooling curves; and

(e) A phase diagram

Liquid methanol is fed to a space heater at a rate of 12.0 L/hr and burned with excess air. The product gas is analyzed and the following dry basis mole percentages are determined: CH₃OH: 0.45%, CO₂=9.03%, CO=1.81% (make sure you think about what else needs to be in the product gas).

a) (1 point) Draw and fully label a PFD

b) (2 points) Calculate the fractional conversion of methanol, the percentage excess air fed, and the mole fraction of water in the product gas.

c) (1 point) Suppose the products are released directly into a room. What potential problems do you see and what remedies do you suggest?

• Specific heat of ice: 2.09 J/(g⋅∘C
• Specific heat of liquid water: 4.18 J/(g⋅∘C)
• Enthalpy of fusion: ΔHfus=334J
• Enthalpy of vaporization: ΔHvap=2250 J/g
• How much heat energy, in kilojoules, is required to convert 47.0 g of ice at −−18.0 ∘C∘C to water at 25.0 ∘C?

9.77

Methane is burned with 25% excess air in a continuous adiabatic reactor. The methane enters the reactor at 25 C and 1.10 atm at a rate of 550 L/s, and the entering air is at 150 C and 1.1 atm. Combustion in the reactor is complete, and the reactor effluent gas emerges at 1.05 atm.

a) Calculate the temperature and the degrees of superheat of the reactor effluent. (Consider water to be the only condensable species in the effluent).

b) Suppose only 15% excess air is supplied. Without doing any additional calculations, state how the temperature and degrees of superheat of the reactor effluent would be affected [increase, decrease, remain the same, cannot tell without more information] and explain your reasoning. What risk is involved in lowering the percent excess air?