WhatisthepHof7.51x10^-8mol/LHCl(aq)?Giveyouransweraccuratetotwodecimalplaces.Note:Youaredealingwithaverydilutesolutionofaverystrongacid.Thinkcarefully!Oneapproachistowritedownmassandchargebalanceequat

问题：WhatisthepHof7.51x10^-8mol/LHCl(aq)?Giveyouransweraccuratetotwodecimalplaces.Note:Youaredealingwithaverydilutesolutionofaverystrongacid.Thinkcarefully!Oneapproachistowritedownmassandchargebalanceequationsandall

答案：↓↓↓

蔡若虹的回答：

网友采纳　　假设由水电离的c(H+)=x,则c(OH-)=x　　盐酸电离的氢离子浓度=c(HCl)=7.51x10^-8　　溶液中的氢离子浓度=x+7.51x10^-8　　溶液中的氢氧根浓度=x　　在水溶液中,总氢离子浓度乘以总氢氧根浓度等于水的离子积　　所以x(x+7.51x10^-8)=10^(-14)　　可以解出x　　进而求出x+7.51x10^-8　　进而算出pH值　　没有计算