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ba hco3 2 h2so4
ba hco3 2 + h2so4
cho dung dịch h2so4 vào dung dịch ba hco3 2
ba hco3 2 ba oh 2
ba hco3 2 nahso4
ba hco3 + na2so4
na2so4 + ba hco3 2
ba hco3 2 + co2
ba hco3 2 khso4
ba hco3 2 na2co3
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