
Chemical Forums: pH with Ka problem
Acetylsalicylic acid, HC9H704, is the active component in an aspirin. This acid is the cause of the stomach upset some people get when taking aspirin. Two extra-strength aspirin-tablets, each …
Chemical Forums: Metal ions
Ka is constant, period. What happens is that hydroxide ions are removed from the solution by complex, thus moving equilibrium of water dissociation to the right.
Chemical Forums: Is it possible to calculate the pKa of H2SO4
2023年4月7日 · I thought that strong acids dissociated completely if they had enough water. So I concluded that I could estimate the amount of water needed to make them lose half of the …
Chemical Forums: I need help with these acid/base problems.
2011年4月11日 · 1. A 0.10 M solution of the weak acid HA has a pH of 2.96. What is the percent dissociation of HA in this solution? What is Ka for HA? 2. An unknown acid is dissolved in …
Chemical Forums: Acid-base properties of salts
What determines if an acid/base is strong or weak is the completion of its dissociation. An acid/base that completely dissociates into its ions when placed in an aqueous solution is …
Chemical Forums: Book of extensive pKa/pKb tables
2009年10月10日 · You won't be able to easily find pKa or pKb values for non-aqueous solvents because the concentration of water (approx. 55M) was actually multiplied into the equilibrium …
Chemical Forums: 1,2-diol synthesis from a water insoluble alkene
2015年10月22日 · Hi, The typical 1,2-diol synthesis required the use of potassium permanganate in alkaline aqueous solutions. Here is the problem, I have a water insoluble alkene that I want …
Chemical Forums: Finding Ka1 and Ka2 for Malonic Acid
At 25C, the pH of 19.5g of malonic acid (HOOC-CH2-COOH) in 0.250L water is 1.47. After adding 12.5g of NaOH to this solution, the pH was 6.03. What are the values of Ka1 and Ka2? Mr of …
Chemical Forums: pH of a solution of 2,5M NH4Cl in 0,1M HCl
2014年3月19日 · P.S.: I found this pretty confusing. In my first attemp, at step (1), I calculated [H3O+] contributed by NH4+ thanks to the technique of considering [H3O+] = [NH3] = x (from …
Chemical Forums: Grade 12 chemistry lab questions {titration}
2013年4月26日 · The two values for the acetic acid are Ka = 6.916 x 10-6 and Ka = 7.6 x 10-5. The exponents show that the value contains numerous zeros before it not having a large …