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HgO + Cl 2 HgCl + O 2. Na + Br 2 NaBr. KClO 3 KCl +O 2. Ca (OH) 2 + HNO 3 Ca(NO 3 ) 2 + H 2 O. Al 2 O 3 Al + O 2. CuCl 2 + H 2 S CuS + HCl. Cl 2 + NaBr NaCl + Br 2. NaOH + HCl NaCl + H 2 O. Na 2 O + CO 2 Na 2 CO 3. H 2 O + Fe Fe 2 O 3 + H 2.
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