What is (H3O+) in a solution of 0.075 M HNO2 and 0.030 M NaNO2?Nitrous acid, HNO2, has a Ka of 7.1 x 10^-4. What is the H3O+ in a 0.60 M solution of HNO2?Which of the acids below will have the lowest pH in a 0.10 M solution of...
A weak acid is a type of substance that can be said to be weakly dissociating in solutions and produces a solution that has a pH of less than 7. The computation for the pH of solutions with these types of acids would not be straightforward, as we would need to consid...
The bookstore is (2) ___ a coffee shop.Naomi: Ask him what street he’s (3) ___.Hector: What street are you on? Do you see any street (4) ___ ?Mateo: Yeah, I’m on the (5) ___of Atlantic and Broadway.Hector: He’s on the corner of Atlantic and Broadway.Naomi: Tell...
What is K{eq}_b{/eq} for ClO{eq}^-{/eq} if K{eq}_a{/eq} for HClO is 3.5 x 10{eq}^{-8}{/eq}? Base Dissociation Constant of a Conjugate Base: The acidity of a weak acid is described by the acid dissociation constant {eq}K_a{/eq}. Weak acids also produce their conjugat...
（1）过氧化钙的化学式为 2，其中氧的化合价为 ； 2属于 （“酸”、“碱”、“盐”或“氧化物”）。 （2）正确看待和安全使用食品添加剂非常重要。下图是某超市售卖的2种不同品牌橙汁的标签。 ①2种橙汁均属于 （填“纯净物”或“混合物”）。 ②你更倾向于选择的品...
小明希望用稀硫酸和锌粒反应来制取氢气，但实验室提供的是溶质质量分数为98%的浓硫酸．试计算：（1）将10g浓硫酸配制成溶质质量分数为19.6%的稀硫酸，需要加水多少克？___（2）取上述配制好的溶质质量分数为19.6%的稀硫酸20g与足量锌粒充分反应，能制得氢气质量为多少克？___（3）充分反应后所得溶液中溶质...
Please also note that SCOPE=ALL is now an obsolete parameter setting for the MAINTAIN function. - To obtain a report of new variables that could be added to your dictionary, specify: MAINTAIN TABLE NAME=_ALL_ REPORT SCOPE=NEWVARS NOUPDATE; - To obtain a report of all changes to existing ...
For those of you who watched the DNC production, it will be easy to understand why there are so many long-standing Democrats who are now finding themselves outside the fray of the new Democratic Party. These are the voters who will make a difference in the upcoming national election…These...
Answer to: The pKa of (H2PO4)- at 25 degrees Celsius is approximately 7.2. At pH 6.2, what is the ratio [(HPO_4)2-] / [(H_2PO_4)-] By signing up,...
HClO has a Ka = {eq}2.9 \times 10^{-8} {/eq}.Weak Acid:A Bronsted acid is defined as any molecule or ion that can increase the concentration of hydronium ion in aqueous solution through the donation of ionized hydrogens (protons). This occurs through the dissoci...