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在naoh中加入过量碳酸氢钠，ph变小，怎么计算

2025-03-15 22:04:46

推荐回答（1个）

回答1：

混合后发生反应：NaOH+NaHCO3=Na2CO3+H2O，由于NaHCO3过量，所以最终溶液中的成分是NaHCO3、Na2CO3、H2O，这就组成了缓冲溶液体系，则有缓冲液PH计算公式PH=pKa-lgc(NaHCO3)/c(Na2CO3)

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