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Questions and Answers
What is the process of evaporation?
What is the process of evaporation?
- The mixing of a solvent with a solution by dissolution
- The separation of a solvent from a solution by filtration
- The removal of a solvent from a solution by vaporization (correct)
- The addition of a solvent to a solution by condensation
What is the formula for heat transfer to boiling liquids in an evaporator?
What is the formula for heat transfer to boiling liquids in an evaporator?
- $q = U - A. \Delta T$
- $q = \frac{U}{A}. \Delta T$
- $q = U. A. \Delta T$ (correct)
- $q = U + A. \Delta T$
What is the boiling point rise (B.P.R.)?
What is the boiling point rise (B.P.R.)?
- The difference between the boiling point of an aqueous solution and that of water at the same pressure (correct)
- The increase in pressure during the boiling process
- The decrease in temperature during the boiling process
- The difference between the melting point of an aqueous solution and that of water at the same pressure
What does the formula $\Delta T$ represent in heat transfer to boiling liquids in an evaporator?
What does the formula $\Delta T$ represent in heat transfer to boiling liquids in an evaporator?
How is evaporation classified in terms of circulation?
How is evaporation classified in terms of circulation?
What is the overall heat transfer coefficient, U, in the formula for heat transfer to boiling liquids in an evaporator?
What is the overall heat transfer coefficient, U, in the formula for heat transfer to boiling liquids in an evaporator?
What does 'Boiling Point Rise' (B.P.R.) refer to?
What does 'Boiling Point Rise' (B.P.R.) refer to?
What is the Duhring rule in relation to aqueous solutions?
What is the Duhring rule in relation to aqueous solutions?
What does 'Hydrostatic head' refer to in relation to the pressure in a liquid?
What does 'Hydrostatic head' refer to in relation to the pressure in a liquid?
Which type of evaporator uses natural circulation?
Which type of evaporator uses natural circulation?
What is the difference between the boiling points of two different solutions at the same pressure called?
What is the difference between the boiling points of two different solutions at the same pressure called?
At fixed pressure, under what conditions is the boiling point of a solution higher than that of water?
At fixed pressure, under what conditions is the boiling point of a solution higher than that of water?
What happens to the pressure as a liquid rises through tubes?
What happens to the pressure as a liquid rises through tubes?
If steam with a temperature of 389 oK is used to heat both water and a 10% NaCl solution, what will be the difference in temperature ($ riangle T$) for water?
If steam with a temperature of 389 oK is used to heat both water and a 10% NaCl solution, what will be the difference in temperature ($ riangle T$) for water?
'Duhrings plot' is used to determine which relationship?
'Duhrings plot' is used to determine which relationship?
What does 'Pharmaceutical technology (PT-418)' discuss?
What does 'Pharmaceutical technology (PT-418)' discuss?
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