常温下,Ka×10-4,Ka (CH3×10-5,Kb (NH3·H2×10-5,以下说法正确的选项是 A. 浓度均为0.1 mol·L-1的 HCOONa和NH4Cl 溶液中阳离子的物质的量浓度之和: 前者大于后者 B. 用相同浓度的NaOH溶液分别滴定等体积pH均为3的HCOOH和CH3COOH溶液至终点,消耗NaOH溶液的体积相等 C. mol·L-1 HCOOH 与 ...
2常温下,Ka(HCOOH)=1.77×lO-4,Ka(CH3OOH)=1.75× 10-5,Kb(NH3∙H2O)=1.75×10-5,下列说法不正确的是()A.浓度均为0.1 mol•L-1的HCOOH和NH3•H20溶液中:c(HCOO-)>c(NH4+)B.用相同浓度的NaOH溶液分别滴定等体积pH均为3的HCOOH和CH3COOH溶液至终点,HCOOH消耗NaOH溶液的体积比CH3COOH小C....
What is the Kb for the {eq}HCOO^- {/eq} ion? Kb and Ka: Ka is the acid dissociation constant. A large Ka value indicates a strong acid because it means the acid is largely dissociated into its ions. A Large Ka value also means the formation of products in ...
A weak acid (HA) has a pK_a value of 3.00. At what pH is \begin{bmatrix}HA\end{bmatrix} = \begin{bmatrix}A^-\end{bmatrix}? If the pH of a 0.10 M acid solution is 4.63, what is the Ka value for the acid? What is the pH when 100 mL of 0.1 M NH3 is titrated with 5...
vue-material-design-ripple/package-lock.json Go to file Go to file T Go to line L Copy path Copy permalink Cannot retrieve contributors at this time 5760 lines (5760 sloc) 211 KB Raw Blame Open with Desktop View raw View blame { "name": "vue-material-design-ripple", "versio...
常温下,Ka(HCOOH)=1.77×lO-4,Ka(CH3OOH)=1.75× 10-5,Kb(NH3∙H2O)=1.75×10-5,下列说法不正确的是()A.浓度均为
KA1(SO_4)_2-12H_2O 名称是十二水合硫酸铝钾,俗名是明矾,故B错误;C.C2H4O有多种同分异构体,若结构为,名称是环氧乙烷,若结构为 CH3CHO,名称是乙醛,故C错误;D.根据系统命名法,HOCH2CH(CH2CH3)CH2OH的名称是2-乙基—1,3—丙二醇,故D正确;答案选D。
计算0.0100mol/L CH3CH2NH3+和0.010mol/L NH4Cl的混合溶液pH值。(CH3CH2NH3+,Ka=1.8×10-11,NH4+的Ka=5.5×10-10) 查看答案 更多“计算0.0100mol/L CH3CH2NH3+和0.010mol/L NH4Cl的混合溶液pH值。(CH3CH2NH3+,Ka=1.8×10-11,NH4+的”相关的问题 第1题 计算0.20mol/L H2C2O4溶液的pH值。[H2C2O4的...
What does the Ka value indicate about this compound? Write the dissociation or ionization in water for HC3H5O2, (CH3)2NH2⁺, CH3COOH, CH2COOH, H2PO4¯, [[Mn(H2O)6]²⁺ The Ka for hydrofluoric acid is 1.5 x 10^-11. What is Ka for the fluoride ion? Write...
What is the value of Ka for hydrocyanic acid? Given that Ka for HF is 6.3 x 10-4 at 25^o �C, what is the value of Kb for F- at 25^o �C? Given that Kb for CH_3NH_2 is 5.0 � 10-4 at 25^o �C, what is the value of Ka for ...