Chapter 1 - Measurement And Experimental Techniques

Question 1

How do you determine if a gas is denser or less dense than air?

Answer 1

A gas is considered less dense than air if its Mr is lesser than 30.

Question 2

What is the acidity and solubility of Hydrogen?

Answer 2

Neutral and insoluble

Question 3

What is the acidity and solubility of oxygen?

Answer 3

Neutral and slightly soluble

Question 4

What is the acidity and solubility of hydrogen chloride?

Answer 4

Acidic and very soluble

Question 5

What is the acidity and solubility of Chlorine?

Answer 5

Acidic and soluble

Question 6

What is the acidity and solubility of Sulfur dioxide?

Answer 6

Acidic and very soluble

Question 7

What is the acidity and solubility of Carbon dioxide?

Answer 7

Acidic and slightly soluble

Question 8

What is the acidity and solubility of ammonia gas?

Answer 8

Alkali (basic) and very soluble

Question 9

Name 4 common drying agents.

Answer 9

1) anhydrous calcium chloride
2) calcium oxide
3) concentrated sulfuric acid
4) silica gel

Question 10

What can anhydrous calcium chloride be used against?

Answer 10

All gases except ammonia as it forms a salt

Question 11

What can calcium oxide be used against?

Answer 11

Ammonia and all neutral gases, but not acidic ones

Question 12

What can concentrated sulfuric acid be used against?

Answer 12

All gases except ammonia as it reacts to form a salt.