Which of the following is a weak acid? a) {eq}HBr {/eq} b) {eq}H_2SO_4 {/eq} c) {eq}HNO_3 {/eq} d) {eq}HNO_2 {/eq} e) {eq}KOH {/eq} Strength of an Acid The strength of an acid is a measure of its ability to liberate hydronium ions in...
是不是用 pH = pKa + log10([A-]/[HA]) 这个公式呢?简单翻译如下:用强碱滴定弱酸,当滴定到达完全反应(酸碱正好反应完)的三分之一时,此时的ph=5.55,那么这个弱酸的pka是多少? 2 一道有关pka和ph的英语化学题 A weak acid is titrated with a strong base and during the titration the pH is plotted...
1) strong acid/strong base: HCl + NaOH 2) weak acid/strong base: CH_3COOH + NaOH 3) strong acid/weak base: HCl + NH_4OH Which of the following substances would be a poor choice for making conductive solutions? a) HCl, KBr, HNO_3 b) NaOH, K...
Preparing a salt of O-acetylsalicylic acid of basic amino acid, comprises continuously contacting, in a reactor (4), an aqueous solution of basic amino acid and a solution of O-acetylsalicylic acid dissolved in a solvent, and introducing a part of basic amino acid in the reactor, where: a...
百度试题 题目H3BO3 is a weak ternary acid (三元酸). ( ) 相关知识点: 试题来源: 解析 × 反馈 收藏
When hydrochloric acid combines with a base such as sodium hydroxide, NaOH, the base dissociates into sodium and hydroxide ions. The hydrogen ions from the hydrochloric acid combine with the hydroxide ions from the sodium hydroxide to form water. The sodium ions combine with the chlorine ions to...
Question: (10 pts) Hydrofluoric acid, HF, is a weak acid in water, while HCI is a strong acid.a) Based on the data provided below, calculate the Gibbs free energy change (ΔrGo) andentropy change (ΔSo) at the ...
A certain weak acid is 10% dissociated in 1.0mol·L-1 solution.In 0.10mol·L-1 solution,the percentage of dissociation would be()。 A. greater than10 B. 10 C. less than10 D. zero 相关知识点: 试题来源: 解析 A.greater than10 ...
Which of the following is a Bronsted acid? (a) CH3COOH (b) NaOH (c) NH3 Which type of substance ionizes completely and creates hydronium ions when dissolved in water? A. Strong acid B. Strong base C. Weak acid D. Weak ...
Pivaic acid is a monoprotic weak acid. A 0.100 mol·L-1 solution of pivalic acid has a pH=3.00. What is the pH of 0.100 mol·L-1 sodium pivalate at the same temperature?Solution Ka(HPi)=[Hg0+]·[Pi门_(1.0×10-3)2[HPi0.100=1.0×10-5,Kb(NaPi)=Kw/Ka(HPi)=1.0×10-14/(1.0...