Explain in details the reasons for your classifications.

 

 

Classify the following processes as batch, continuous, or semibatch, and transient or steady- state. 1. A balloon is filled with air at a steady rate of 2 g/min. 2. A bottle of milk is taken from the refrigerator and left on the kitchen table. 3. Water is boiled in an open flask. 4. Carbon monoxide and steam are fed into a tubular reactor at a steady rate and react to form carbon dioxide and hydrogen. Products and unused reactants are withdrawn at the other end. The reactor contains air when the process is started up. The temperature of the reactor is constant, and the composition and flow rate of the entering reactant stream are also independent of time. Classify the process (a) initially and (b) after a long period of time has elapsed.