Consider the reaction of steam with pure Si. Si + 2H 2 O(g) --> SiO 2 + 2H 2 (1)
ID: 912359 • Letter: C
Question
Consider the reaction of steam with pure Si.
Si + 2H2O(g) --> SiO2 + 2H2 (1)
How many elements are involved? _______ Which ones ____________________________
How many components are involved? _______ Which ones ___________________________
How many independent reactions are involved? _____________________
Write the formation reaction for steam.
___________________________________________________________________ (2)
Write the formation reaction for silica.
___________________________________________________________________ (3)
Explanation / Answer
1) elements ---------> 3 they are Si , H, O
2) components ----------> 2 they are Si , H2O
3) independent reactions --------> 2 . oxidation and reduction
4) steam formation
H2 (g) + 1/2 O2 (g) ---------------------> H2O (g)
5) silica formation
Si (s) + O2 (g) ---------------------> SiO2 (s)