Properties And Preparation Of Gases Flashcards
1
Q
What are common methods for preparing gases in the laboratory?
A
Chemical reactions such as displacement, decomposition, and direct combination.
These methods allow for the generation of various gases through different chemical processes.
2
Q
How is oxygen (O2) prepared in the laboratory?
A
By heating potassium chlorate (KClO3) in the presence of manganese dioxide (MnO2) as a catalyst.
This reaction produces oxygen gas through the decomposition of potassium chlorate.
3
Q
What are the physical properties of oxygen?
A
Colorless, odorless gas.
These properties make oxygen distinguishable in its gaseous state.
