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)

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)

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.