PH＝9的氢氧化钡溶液与PH＝12的氢氧化钾溶液按体积比4:1混合,混合溶液中H+浓度为?＜常温下＞
PH＝9的氢氧化钡溶液与PH＝12的氢氧化钾溶液按体积比4:1混合,混合溶液中H+浓度为?＜常温下＞
数学人气：329 ℃时间：2019-10-23 04:13:18
优质解答
先求OH－离子浓度：(4×10^－5+1×10^-2)÷5≈0.002mol/L.H+浓度为：1×10^-14÷0.002=5×10^-12
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