Preparation and Properties of Dihydrogen

The video tutorial covers the properties, preparation, and uses of hydrogen. It explains the stability of atomic hydrogen and its preparation in laboratories using zinc and acids. Commercial production methods like electrolysis and steam reforming are discussed. The video also highlights hydrogen's physical properties, its reactions with other elements, and its industrial applications, including ammonia synthesis and use as rocket fuel.

What is the stability of atomic hydrogen in its natural state?

• Stable for several hours

• Stable indefinitely

• Stable for a fraction of a second

• Stable for several minutes

Which metal is used in the laboratory preparation of hydrogen gas with hydrochloric acid?

• Iron

• Aluminum

• Copper

• Zinc

What is the main byproduct of the electrolysis of brine solution?

• Oxygen

• Sodium hydroxide

• Hydrogen chloride

• Carbon dioxide

Which process involves the partial oxidation of hydrocarbons to produce syngas?

• Electrolysis

• Steam reforming

• Pyrolysis

• Thermal cracking

What is the dissociation enthalpy of the hydrogen bond?

• 250.75 kJ/mol

• 500.00 kJ/mol

• 300.50 kJ/mol

• 435.99 kJ/mol

Which halogen reacts explosively with dihydrogen even in the dark?

• Bromine

• Iodine

• Chlorine

• Fluorine

At what temperature and pressure does dihydrogen combine with nitrogen to form ammonia?

• 300 K and 100 atm

• 637 K and 200 atm

• 500 K and 150 atm

• 700 K and 250 atm

What is one of the main uses of dihydrogen in the metallurgical industry?

• To oxidize metals

• To coat metals

• To reduce metal oxides to metals

• To form metal alloys

Which industry uses liquid hydrogen as a rocket fuel?

• Textile industry

• Automobile industry

• Pharmaceutical industry

• Space research

How does hydrogen enhance the performance of petroleum products?

• By decreasing density

• By adding sulfur

• By removing organic sulfur

• By increasing viscosity