1化学的base and acid的几道题,1.A table wine has a pH of 3.40.What is the hydronium ion concentration of thewine?2.A 2.5 x 10-3 M solution of an acid HA has a pH of 3.80 at 25°C.What is thehydronium ion concentration of the solution?Calculate Ka for the acid.3.The ionisation...
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If the Ka is 1 x 10^-3 what is pka? An acid has a pKa of 6.0. Determine the dissociation constant Ka. An acid has a pKa of 8.6. Determine the dissociation constant Ka. Hydrocyanic acid (HCN) is a weak acid with Ka = 4.9 x 10-10. Calculate the pKa of this acid. ...
The Ka of a monoprotic weak acid is 3.71 times 10-3. What is the percent ionization of a 0.197 M solution of this acid? The K_a of a monoprotic weak acid is 3.72 times 10^{-3} M. What is the percent ionization of a 0.112 M sol...
甲房地产公司11月销售自行开发的商业房地产项目，取得不含增值税收入 20 000万元，准予从房地产转让收入额减除的扣除项目金额12 000万元。已知土地增 值税税率为40%，速算扣除系数为5%，甲房地产公司该笔业务应缴纳土地增值税税额的下列计算列式中，正确的是（ ）。
KA Rye,NJ Hime,PJ Barter - 《Journal of Biological Chemistry》 被引量: 202发表: 1996年 Measurement of the lecithin/sphingomyelin ratio and phosphatidylglycerol in aminotic fluid: an accurate method for the assessment of fetal lung maturity. A total of 506 amniotic fluid samples from 337 pregn...
If the pKa of an acid is -4, what is the Ka? What is the pK_a of a compound used to make a buffer of pH 10.65 using 3 times as much conjugate base than the weak acid? What does the pK_a really tell you about the stren...
If the Ka of a monoprotic weak acid is 6.9 x 10-6, what is the pH of a 0.33 M solution of this acid?pH ScalepH determines the acidity or basicity of a solution and is dependent on the amount of hydrogen ion present in the solution. ...
Molar mass is the mass of one mole of a substance. We determine the molar masses from values on the periodic table. Answer and Explanation: Before we can sum all of the molar mass of the elements in acetic acid we need the chemical formula of acetic acid. Acetic acid's chemical formula...
It's important to keep in mind a solution must be aqueous to have a pH. You cannot, for example, calculation pH of vegetable oil or pure ethanol. What Is the pH of Stomach Acid?|Can You Have Negative pH? Sources Bates, Roger G. (1973).Determination of pH: Theory and Practice. Wile...