1. Fe 2 O 3 + H 2 SO 4 → Fe 2 (SO 4 ) 3 + H 2 O
2. CaO + H 3 PO 4 → Ca 3 (PO 4 ) 2 + H 2 O
3. Al 2 O 3 + H 2 SO 4 → Al 2 (SO 4 ) 3 + H 2 O
4. Fe 2 O 3 + HNO 3 → Fe(NO 3 ) 3 + H 2 O
5. Ca(HCO 3 ) 2 → CaCO 3 + H 2 O + CO 2
6. FeSO 4 + NaOH → Fe(OH) 2 + Na 2 SO 4
7. Fe 2 (SO 4 ) 3 + KOH → Fe(OH) 3 + K 2 SO 4
8. Cu(NO 3 ) 2 → CuO + NO 2 + O 2
9. CaCO 3 + HCl → CaCl 2 + H 2 O + CO 2
10. KOH + CO 2 → K 2 CO 3 + H 2 O
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