PCP chapter 1
CHEMICAL PROCESS PRINCIPLES (CEN 1022)
Tutorial 3 : Process Variables
1. The specific gravity of gasoline is approximately 0.70. a) Determine the mass (kg) of 50.0 liters of gasoline. b) The mass flowrate of gasoline exiting a refinery tank is 1150kg/min. Estimate the volumetric flow rate in litres/s.
3. How many of the following are found in 15.0kmol of benzene(C6H6)? a) kg C6H6 b) mol C6H6 c) Ib-mol C6H6 d) mol (g-atom) C e) mol H f) g C g) g H h) molecules of C6H6.
4. Liquid toluene C7H8 ( SG:0.866)is flowing through a pipe at a rate of 175 m3/h. a) What is the mass flow rate of this stream in kg/min? b) What is the molar flow rate in mol/s?
5. A mixture of methanol and methyl acetate contains 15.0 wt% methanol. a) Determine the g-moles of methanol in 200.0kg of the mixture. b) The flow rate of methyl acetate in the mixture is to be 100.0 Ib-mole/h. What must the mixture flow rate be in Ibm/h
6. The feed to an ammonia synthesis reactor contains 25 mole% nitrogen and the balance hydrogen. The flow rate of the stream is 3000kg/h. Calculate the rate of flow nitrogen into the reactor in kg/h.
7. A mixture is 10.0 mole% ethyl alcohol, 75.0 mole % ethyl acetate (C4H8O2) and 15.0 mole% acetic acid. Calculate the mass fractions of each compound. What is the average molecular weight of the mixture? What would be the mass (kg) of a sample containing 25.0 kmol of ethyl acetate?
8. A 5.00wt % aqueous sulfuric acid solution (ρ=1.03 g/ml) flows through a 45m long pipe with a 6.0cm diameter at a rate of 87 L/min. a) What is the molarity of sulfuric acid in the solution? b) How long in seconds would it take to fill a 55 gallon drum and how much sulfuric acid (Ibm) would the drum contain?
9. Perform the following pressure conversion. The given pressures are absolute. a) 2600mm Hg to psi b) 275 ft H2O to kPa c) 20cm Hg of vacuum to atm (absolute)
Tutorial 3 : Process Variables
1. The specific gravity of gasoline is approximately 0.70. a) Determine the mass (kg) of 50.0 liters of gasoline. b) The mass flowrate of gasoline exiting a refinery tank is 1150kg/min. Estimate the volumetric flow rate in litres/s.
3. How many of the following are found in 15.0kmol of benzene(C6H6)? a) kg C6H6 b) mol C6H6 c) Ib-mol C6H6 d) mol (g-atom) C e) mol H f) g C g) g H h) molecules of C6H6.
4. Liquid toluene C7H8 ( SG:0.866)is flowing through a pipe at a rate of 175 m3/h. a) What is the mass flow rate of this stream in kg/min? b) What is the molar flow rate in mol/s?
5. A mixture of methanol and methyl acetate contains 15.0 wt% methanol. a) Determine the g-moles of methanol in 200.0kg of the mixture. b) The flow rate of methyl acetate in the mixture is to be 100.0 Ib-mole/h. What must the mixture flow rate be in Ibm/h
6. The feed to an ammonia synthesis reactor contains 25 mole% nitrogen and the balance hydrogen. The flow rate of the stream is 3000kg/h. Calculate the rate of flow nitrogen into the reactor in kg/h.
7. A mixture is 10.0 mole% ethyl alcohol, 75.0 mole % ethyl acetate (C4H8O2) and 15.0 mole% acetic acid. Calculate the mass fractions of each compound. What is the average molecular weight of the mixture? What would be the mass (kg) of a sample containing 25.0 kmol of ethyl acetate?
8. A 5.00wt % aqueous sulfuric acid solution (ρ=1.03 g/ml) flows through a 45m long pipe with a 6.0cm diameter at a rate of 87 L/min. a) What is the molarity of sulfuric acid in the solution? b) How long in seconds would it take to fill a 55 gallon drum and how much sulfuric acid (Ibm) would the drum contain?
9. Perform the following pressure conversion. The given pressures are absolute. a) 2600mm Hg to psi b) 275 ft H2O to kPa c) 20cm Hg of vacuum to atm (absolute)