Understanding n Factors and Equivalent Weights

The video tutorial explains the concept of equivalent weight, likening it to a currency exchange rate for chemical reactions. It covers how to calculate the equivalent weight of acids, bases, and salts by using the molecular weight and n factor. The tutorial provides examples for each type of compound, demonstrating the calculations step-by-step. It also introduces a method for determining the n factor for phosphorus compounds and emphasizes the importance of understanding equivalent weight in chemical reactions.

What is the equivalent weight of hydrogen gas in the reaction with oxygen to form water?

• 1 gram

• 8 grams

• 4 grams

• 2 grams

How is the equivalent weight of an acid calculated?

• Molecular weight divided by the number of oxygen atoms

• Molecular weight divided by the n factor

• Molecular weight multiplied by the n factor

• Molecular weight minus the n factor

What is the n factor of sulfuric acid (H2SO4)?

• 1

• 2

• 3

• 4

Which acid has an equivalent weight of 60 grams?

• Boric acid

• Acetic acid

• Nitric acid

• Hydrochloric acid

What is the n factor of sodium hydroxide (NaOH)?

• 2

• 4

• 3

• 1

How many hydroxide ions are present in aluminum hydroxide (Al(OH)3)?

• 3

• 2

• 4

• 1

What is the equivalent weight of ammonia (NH3) when converted to ammonium hydroxide?

• 17 grams

• 34 grams

• 28 grams

• 56 grams

What is the n factor of sodium chloride (NaCl)?

• 1

• 2

• 4

• 3

Which salt has an equivalent weight of 50 grams?

• Calcium carbonate

• Sodium chloride

• Potassium sulfate

• Aluminum sulfate

What is the n factor of aluminum oxide (Al2O3)?

• 2

• 4

• 6

• 8