pH 值的公式 -lg[H+] 10ml,1mol HCL 75ML WATER15ml 1mol NAOHwhat is the PH?i mean all three things mixed together...........sorrry about that~

分类: 作业答案 • 2021-12-19 10:40:10

问题描述：

pH 值的公式
-lg[H+]
10ml,1mol HCL
75ML WATER
15ml 1mol NAOH
what is the PH?
i mean all three things mixed together...........sorrry about that~

答

10ml,1mol HCL
75ML H2O
15ml 1mol NAOH
相互反应之后氢氧化钠还多0.005×1=0.005mol
体积约为100ml
那么浓度就是0.005/0.1=0.05mol/L
PH=14—lg0.05=14—1.3=12.7