SiO
2
+ NaCl + CaCO
3
1.
Add Water
NaCl (aq)
1.80 g
SiO
2
(s) + CaCO
3
(s)
2.
React with HCl
Step 3?
10.00 g
*
of
Yes
No
CaCO
3
No
Yes
NaCl
No
No
SiO
2
Reacts with 3M HCl
Soluble in H
2
O
*
TODAYÕS EXPERIMENT:
2.5 to 3.0 grams
unknown only.
Filtrate
Residue
Filtrate?
Residue?
SiO
2
(s)
3.20 g
CaCl
2
(aq)
Residue
Filtrate