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Problem Which of the following reaction(s) is relevant to the microcosmic salt bead test?
(1) 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 CoO + ZnO → CoZnO 2 \text{CoO} + \text{ZnO} \rightarrow \text{CoZnO}_2 CoO + ZnO → CoZnO 2 CoO + NaPO 3 → NaCoPO 4 \text{CoO} + \text{NaPO}_3 \rightarrow \text{NaCoPO}_4 CoO + NaPO 3 → NaCoPO 4 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 Browse the problem library