Which 0.1 M solution will turn phenolphthalein pink? A. HBr(aq) B. CO2 (aq) C. LiOH (aq) D. CH3OH (aq) How much 6.0M sodium nitrate solution should you use to make 0.585 L of a 1.2 M solution? If the pH of a 0.15 M solution of HF is 2.00, what is the Ka and percent ...
C. 碱性强弱: KOH > NaOH >LiOH D.酸性强弱: H3PO4< H2SO4 < HClO4免费查看参考答案及解析 题目:[2012·安徽卷] 氢氟酸是一种弱酸,可用来刻蚀玻璃。已知25 ℃时: ①HF(aq)+OH-(aq)===F-(aq)+H2O(l) ΔH=-67.7 kJ·mol-1 ②H+(aq)+OH-(aq)===H2O(l) ...
题目: 已知:HF(aq) H+(aq)+F-(aq) △H<0。对HF溶液改变下列条件,其预测合理的是( )A.适当加热(不考虑HF挥发),HF电离程度增大B.恒温下加入一定量的蒸馏水:平衡时减小C.加入少量NaF固体,溶液pH增大D.通入少量HCl,平衡向左移动,c(H+)减小 免费查看参考答案及解析 ...
Answer to: Classify the type of electrolyte: HF(g) H+(aq) + F-(aq). a) strong b) non c) weak By signing up, you'll get thousands of step-by-step...
C3H8O + LiOH = H2O + C3H7O*Li Cr2O3 + KOH + H2SO4 = O2S + K2CrO4 + H2O CoO + H2SO4 = CoO4S + H2O Recently Balanced EquationsBalance HF + K2O = K2F + OH Using the Algebraic Method To balance the equation HF + K2O = K2F + OH using the algebraic method step-by-step...
Identify if the following are acid or a base: a. H_2SO b. Sr(OH)_2(aq) c. HBr(aq) d. NaOH(aq) What is their chemical equation showing how this is an acid according to the Arrhenius definition? Classify each of the follo...
下列各组物质的性质比较,正确的是A.氢化物稳定性: HF>H2O>NH3B.碱性:LiOH >NaOH>KOHC.酸性:... 查看答案 如图,已知AE、BD相交于点C,AC=AD,BC=BE,F、G、H分别是DC、CE、AB的中点。求证:(1)HF=... 查看答案 将浓度为0.1mol·L-1HF溶液加水不断稀释,下列各量始终保持增大的是 [nbs... 查看答...
A. HC2H3O2(aq) and NaC2H3O2(aq) B. H2SO4(aq) and LiOH(aq) C. HCl(aq) and KCl(aq) D. HF(aq) and NH3(aq) Which of the following mixtures would represent a buffer? a) Sodium chloride/hydrochloric acid b...
不需要复合状态[如(s)(aq)或(g)]。 你可以用小括号()或括号[ ]。 如何平衡方程式 使用本计算器来平衡任何化学方程式或反应!找出发生了哪种反应。 阅读我们的关于如何平衡化学方程式的文章,或在我们的聊天中寻求帮助。例子C4H8 + KMnO4 + H2SO4 = C2H4O2 + H...
题目: 下列说法正确的是A. 第二周期元素从C到F,非金属性逐渐减弱B. 第三周期元素从Na到Cl,原子半径逐渐增大C. HF、HCl、HBr、HI的热稳定性依次逐渐增强D. LiOH、NaOH、KOH的碱性依次逐渐增强 免费查看参考答案及解析 题目: 类比推理是化学中常用的思维方法。下列推理正确的是( )A.HF是卤族元素的氢化物中...