Calculate the concentration of sodium acetate needed to produce a pH of 5.0 in a solution of acetic acid(0.10 mol·L-1)at 25℃. pKa for acetic acid is 4.74 at 25℃.相关知识点: 试题来源: 解析 已知乙酸的,乙酸浓度ca=0.10mol·L-1, 由于乙酸与乙酸钠构成缓冲溶液,设乙酸钠浓度为cb。 ca/cb...
Calculate the concentration of sodium acetate needed to produce a pH of 5.0 in a solution of acetic acid (0.10mol×L-1) at 25℃. pKa for acetic acid is 4.756 at 25℃. 相关知识点: 试题来源: 解析 解: pH = pKa lgca/cb lgca/cb = pKa pH = 4.756 5.0 = 0.24...
题目 Calculate the hydroxide ion concentration, the percent reaction, and the pH of a 0.050 mol×L-1 solution of sodium acetate. (For acetic acid, Ka=1.74×10-5) . 相关知识点: 试题来源: 解析解:NaAc的Kb=101、.00/1.74´105、 = 5.75´101、...
calculate the concentration of the CA(OH)2 and the pH of the solution of 0.001mol of Ca(OH)2 in 100ml of water at 25°C. 相关知识点: 试题来源: 解析 Without any given statistics? According to my appendice attached in my Inorganic Chemistry, the Ksp value of Ca(OH)2 should be ...
Calculating the pH of the solution involves taking the negative logarithm of the molar concentration of hydronium ions. The pH is a logarithmic scale. A change in the pH of one unit represents a ten-fold change in the concentration of hydrogen ions. We find that an increase in the pH ...
6.17 x 10^-5 M ÷ 0.075 L = 8.23 x 10^-4 moles H+ per 75 mL. (This takes the final concentration of 75 mL into account). This would make the final pH 3.08-- which I suspect is a bit too strong! Logged AWK Retired Staff ...
Calculate pH for: (a)0.001NaOH, (b)0.01NCa(OH)2, (c )0.01MCa(OH)2, (d)10−8MNaOH, (e )102MNaOH, (f)0.0008MMg(OH)2 Assume complete ionisation of each. View Solution Calculate the aqueous solubility ofCa(OH)2in grame per litre : [Ksp=8.0×10−6] ...
Calculate the concentration of H_3O? in a solution that contains 5.5 x 10^-5 M OH? at 25 C. Identify the solution as acidic, basic, or neutral. Autoionization of Water: Water is considered as a very weak electrolyte. Two water ...
百度试题 结果1 题目3 Calculate the pH of a solution of HCl, of concentration 0.25 mol dm-3. C A -0.60□ B 0.25□ C 0.60 D 1.39 相关知识点: 试题来源: 解析 C 反馈 收藏
Concentration is an expression of how much solute is dissolved in a solvent in a chemical solution. The unit you use depends on the chemical solution.