25℃,0.4mol/lch3cooh溶液和0.2mol/lNaOH各100mL混合后pH=5c(ch3coo-)+c(ch3cooh)= c(ch3coo-)-c(ch3cooh)=

来源：学生作业帮助网编辑：六六作业网时间：2024/11/16 23:39:14

25℃,0.4mol/lch3cooh溶液和0.2mol/lNaOH各100mL混合后pH=5c(ch3coo-)+c(ch3cooh)=c(ch3coo-)-c(ch3cooh)=25℃,0.4mo

25℃,0.4mol/lch3cooh溶液和0.2mol/lNaOH各100mL混合后pH=5c(ch3coo-)+c(ch3cooh)= c(ch3coo-)-c(ch3cooh)=
25℃,0.4mol/lch3cooh溶液和0.2mol/lNaOH各100mL混合后pH=5
c(ch3coo-)+c(ch3cooh)= c(ch3coo-)-c(ch3cooh)=

25℃,0.4mol/lch3cooh溶液和0.2mol/lNaOH各100mL混合后pH=5c(ch3coo-)+c(ch3cooh)= c(ch3coo-)-c(ch3cooh)=
C(CH3COOH)=0.4mol/L*0.1L=0.04mol
根据物料守恒得:C(CH3COO^-)+C(CH3COOH)=0.04mol/0.2L=0.2mol/L
C(NaOH)=0.2mol/L*0.1L=0.02mol
CH3COOH+NaOH=CH3COONa+H2O
1 1 1
X 0.02mol Y
X=0.02mol
Y=0.02mol
剩余醋酸的物质的量=0.04mol-0.02mol=0.02mol
混合后溶液中含n(H^)=10^-5mol/L*0.2L=2*10^-6mol
CH3COOH﹤=﹥CH3COO^- + H^+
1 1 1
2*10^-6mol 2*10^-6mol 2*10^-6mol
混合后溶液中含n(CH3COOH)=0.02mol-2*10^-6mol
混合后溶液中含C(CH3COOH)=(0.02mol-2*10^-6mol )/0.2L=(0.1-10^-5)mol/L
混合后溶液中含n(CH3COO^-)=0.02mol+2*10^-6mol
混合后溶液中含C(CH3COO^-)=(0.02mol+2*10^-6mol)/0.2L=(0.1+10^-5)mol/L
C(CH3COO^-)-C(CH3COOH)= (0.1+10^-5)mol/L - (0.1-10^-5)mol/L=2*10^-5mol/L

25℃,0.4mol/lch3cooh溶液和0.2mol/lNaOH各100mL混合后pH=5c(ch3coo-)+c(ch3cooh)= c(ch3coo-)-c(ch3cooh)= 60℃10ml0.1mol/LCH3COOH氢离子浓度为什么比20℃1000ml0.1mol/LCH3COOH大 0.1mol/LCH3COOH加水稀释,为什么[CH3COOH]/[H+]会增大? 相同温度下,0.2mol/LCH3COOH溶液与0.1mol/LCH3COOH溶液中的氢离子浓度之比为? 25 度,向0.1mol/LCH3COOH溶液中滴加0.1mol/LCH3COONa溶液至PH=7,为什么c（CH3COO-）＞c（CH3COOH）, 1、25℃时,0.1mol/l的CH3COOH的PH约是多少?有人做过实验没2、另外,常温下,1LCH3COOH溶液的PH=2,则CH3COOH物质的量远远大于0.01mol?大约是0.01mol的多少倍?有1000倍吗? 为什么1mol/lHcl比1mol/lch3cooh的的PH值小 0.1mol/LCH3COOH稀释至0.01mol/L时,OH-的物质的量怎么变 0.2mol/LCH3COOH溶液c(H+)是0.1mol/LCH3COOH溶液的c(H+)的2倍.这句话是错的吗,怎么判断? 将0.1mol/LCH3CooH溶液加水稀释会引起溶液PH值怎样变化原因 0.1mol/lCH3COOH溶液中加入少量NaOH固体导电性会变弱吗将0.1mol/LCH3CooH溶液加水稀释会引起溶液PH值怎样变化原因 0.1MOL/LCH3COOH溶液在稀释过程中C(H+)/C(CH3COOH)将增大. 加入锌粒对0.1mol/LCH3COOH溶液中的c(H+)怎么影响已知Ka(CH3COOH)=1.75*10^-5,计算0.1mol/LCH3COOH溶液中H+的浓度 0.01mol/LCH3COOH和0.1mol/L的CH3COOH电离的氢离子浓度哪个大是越稀越电离? 0.1mol/lnaoh滴定20ml0.1mol/lch3cooh至化学计量点时的ph是多少? 常温下,在0.1mol/LCH3COOH溶液和0.1mol/LNAOH溶液中,水的电离程度那个大,为什么?