PH计算,
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PH计算,
PH计算,
PH计算,
设碱的体积为v1,由题意可知碱的浓度为0.005mol/L,氢氧根离子浓度为0.01mol/L,设盐的体积为v2,浓度为c2,当Ba恰好完全沉淀时,Ba离子量等于硫酸根离子量,0.005v1=c2*v2,(1)此时溶液ph为11,氢氧根浓度为0.001,Ba(OH)2+NaHSO4=NaOH+H2O+BaSO4,追寻氢氧根可知,(0.01v1-c2*v2)/(v1+v2)=0.001(2),将(1)带入(2),0.01v1-0.005v1=0.001(v1+v2),0.004v1=0.001v2,v1:v2=1:4.解答完毕.