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Chemistry
Chemistry
Problem
Which of the following reaction(s) is relevant to the microcosmic salt bead test? a.
Cr
2
O
3
+
3
B
2
O
3
→
2
Cr
(
BO
2
)
3
\text{Cr}_2\text{O}_3 + 3\text{B}_2\text{O}_3 \rightarrow 2\text{Cr}(\text{BO}_2)_3
Cr
2
O
3
+
3
B
2
O
3
→
2
Cr
(
BO
2
)
3
b.
CoO
+
ZnO
→
CoZnO
2
\text{CoO} + \text{ZnO} \rightarrow \text{CoZnO}_2
CoO
+
ZnO
→
CoZnO
2
c.
CoO
+
NaPO
3
→
NaCoPO
4
\text{CoO} + \text{NaPO}_3 \rightarrow \text{NaCoPO}_4
CoO
+
NaPO
3
→
NaCoPO
4
d.
Al
2
(
SO
4
)
3
+
3
Na
2
CO
3
→
Al
2
O
3
+
3
Na
2
SO
4
+
3
CO
2
\text{Al}_2(\text{SO}_4)_3 + 3\text{Na}_2\text{CO}_3 \rightarrow \text{Al}_2\text{O}_3 + 3\text{Na}_2\text{SO}_4 + 3\text{CO}_2
Al
2
(
SO
4
)
3
+
3
Na
2
CO
3
→
Al
2
O
3
+
3
Na
2
SO
4
+
3
CO
2
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