SiO
2
+ NaCl + CaCO
3
1.
Add Water
Filtrate
NaCl (aq)
1.80 g
SiO
2
(s) + CaCO
3
(s)
Step 2?
Residue
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.
Residue?
Filtrate?