Question

6. Which of the following correctly describes how to connect the hoses to the condenser?

a) Connect the inlet hose to the bottom of the condenser and the outlet hose to the top. Do not try this in the lab  

b) Connect the inlet hose to the top of the condenser and the outlet hose to the bottom. Do not try this in the lab  

c) Connect the inlet hose to the top of the condenser and the outlet hose to the bottom. Try this in the lab  

d) Connect the inlet hose to the bottom of the condenser and the outlet hose to the top. Try this in the lab

8. Select all the correct answers to the statement, below.

To effectively separate the components of a mixture using a fractionating column:

A) The column must be packed very tightly with an inert material  

B) The column must be heated strongly, which causes flooding and makes the separation more efficient  

C) The column must not be heated strongly, to avoid flooding which makes the separation less efficient  

D) Liquid must drip down the column as vapour flows up  

E) The column must be packed with an inert material with a high surface area  

F) Liquid must not drip down the column as vapour flows up  

Answer 1

1):

Option (d) is the correct statement for describing the connection of hoses to condenser.

i.e connect the inlet hose to the bottom of the condenser and the outlet hose to the top.Try this in lab.

The inlet ( water supply) of the hose should always be connected to the lower arm of the condenser which forces water to pass through the condenser against gravity and outlet of the hose should be connected to the upper arm of the condenser.Making the water to flow upwards ,fills the condenser completely.This can be tried out in lab without any issues ,as it is the proper connections of hoses to condenser.

2):

options    (A),(C),(D) and (E) are the correct options for effective separation of the components of a mixture using fractionating column

i.e

(A)The column must be packed very tightly with an inert material(Glass beads).

(C)The column must not be heated strongly,to avoid flooding which makes the separation less efficient.

(D)The liquid must drip down the column as the vapours flows up.

(E)The column must be packed with an inert material with a high surface area.

The above statements are correct statements regarding the separation of components of a mixture using a fractionating column.