Question

How can you force a solid compound to the bottom of a melting point capillary? (Select all that apply.)

A. tap the closed end of the capillary on the counter
B. use a long plastic or glass tube as a drop guide
C. tap the open end of the capillary on the counter
D. use a needle to physically push it to the bottom

Answer 1

Step-by-step explanation:

A capillary is defined as a slim tube in which a solid compound is inserted in order to detect the melting point of the solid.

In order to place the solid into the capillary, it is necessary that the compound should be finely powdered. And, one end of the capillary is closed while the other end which is open is filled with powdered solid.

We tap the closed end of the capillary so that capillary contains maximum amount of the compound.

To determine the melting point of the solid it is important to use a long plastic or glass as drop guide.

Thus, we can conclude that we force a solid compound to the bottom of a melting point capillary:

• tap the closed end of the capillary on the counter.

• use a long plastic or glass tube as a drop guide.