Question: In a test tube, a cotton plug was placed and a few drops of bromine liquid were added to it and then...

Question

In a test tube, a cotton plug was placed and a few drops of bromine liquid were added to it and then a piece of wood charcoal was added to the test tube. Which of the following are observed?
A) Initially the test tube is filled with brown vapors.
B) Activated wood charcoal absorbs gases.
C) Brown vapors are retained in the test tube.
D) Brown vapors are formed because of wood charcoal.

Answer 1

Solution

We know that the activated charcoal may be an excellent adsorbent. It can simply adsorb large volumes of gases. Hence it's utilized in gas masks to adsorb harmful gases.

Complete answer:
We know that bromine is a halogen and has an atomic symbol $Br$ . The number of Bromine is $35$ and therefore the relative atomic mass is $79.904$ . Bromine may be a volatile liquid and it is reddish-brown in color. It has pungent odor and provides off suffocating vapors. It’s soluble in water and denser than water. Therefore it sinks in water. It’s toxic and corrosive.
At first, the tube crammed with brown fumes of bromine. They’re absorbed by activated wood charcoal which may be a good adsorbent and therefore the tube becomes transparent.
Therefore, the option A and B are correct.

Additional Information:
We must know that the activated charcoal contains a massive expanse that makes it a wonderful adsorbent. The gases which are simply liquefied are often promptly absorbable by activated charcoal.
Now we discuss about the properties of charcoal as,
As we know that the charcoal is solid at area temperature. It is black in color. It has rarity as a result of its porosity. It is a dangerous conductor of warmth and electricity. It produces smoke and warmth on combustion. It has high chemisorptive power. It is insoluble in water.

Note:
-Inhaling $11 - 23mg/{m^3}$ of this element causes choking.
-Vapors of Bromine can cause acute and chronic poisoning.
-It is a corrosive element and ingesting it can cause death as a result of the circulatory collapse.
-The least oral dose recommended for humans is $14mg/kg$ and therefore the least lethal inhalation concentration recommended for humans is $1000ppm$ .