You Can Make O2 in the Lab Flashcards
1
Q
What is oxygen made from?
A
Hydrogen peroxide (H2O2)
2
Q
What will the hydroxide peroxide decompose into?
A
Water and oxygen
3
Q
What is the equation?
A
2H2O2 (aq) —> 2H2O (l) + O2 (g)
4
Q
How can the rate of reaction be increased?
A
A sprinkle of manganese(IV) oxide catalyst
5
Q
What does the catalyst do?
A
Speed up the reaction without being used up itself
6
Q
How can you collect the oxygen that’s produced?
A
Over water or by gas syringe
7
Q
Collection over water:
A
Use delivery tube to bubble the gas into an upside-down measured cylinder or gas jar filled with water
8
Q
Gas syringe:
A
Use gas syringe to collect pretty much any gas
9
Q
What does the collection over water method only work for?
A
Insoluble gases, otherwise the gas just dissolved in the water
10
Q
Diagram page 38
A
Ok
