What is the pKa of a weak acid if Ka = 4.0 x 10-4?Which of the following is the strongest acid? (a) CH_3COOH (b) HF (c) H_3PO_4 (d) H_2SO_3 (e) HIWhat is a "polyprotic" acid?Suppose you have two acids. ...
计算0.10mol/LNa2CO3溶液的pH值为()。已知H2CO3的Ka1=4.2×10-7,Ka2=5.6×10-11A.2.38B.11.62C.4.76D.9.24的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大学职业搜题找答案,刷题练习的工具.一键将文档转化为在线题库手机刷题,以提高学习效率,是学
对于pH = 4.00 的 H2CO3 (Ka1Ө= 4.2 ×10-7,Ka2Ө= 4.7×10-11) 溶液,下列叙述中正确的是( )。A.c (H+ ) = 1.0 ×10-4 mol·L-1B.c (H+ ) > c (H2CO3 ) > 4.7×10-11 mol·L-1C.c (HCO3- ) = 4.7×10-11 mol·L-1D.c (HCO3- ) = c (CO32- )的答案...
A weak acid solution of H2CO3 0.24 M has a pH of 3.49. Determine the value of Ka. A certain weak acid, HA, has a Ka value of 5.6 x 10-7. Calculate the pH of a 0.10 M HA solution. A certain weak acid, HA, has a Ka ...
1. Calculate the percent ionization of carbonic acid (H2CO3) in solutions of each of the following concentrations (Ka = 4.3e-07.) (a) 0.215 M ...% (b) 0.441 M ...% (c) 0.611 M ...% 2. (a) Calculate the percent ionization of an 8.5 x 10-2 M...
Study Ka chemistry and Kb chemistry. Learn how to use the Ka equation and Kb equation. See examples to discover how to calculate Ka and Kb of a solution. Related to this Question Explore our homework questions and answers library Search ...
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已知:H3PO4的Ka1y=7.1×10-3,Ka2y=6.3×10-8,Ka3y=4.2×10-13;H2CO3的Ka1y=4.4×10-4,Ka2y=4.7×10-11。下列溶液的浓度均为0.1 mol·L-1,其中pH值最小的是A.NaHCO3B.NaH2PO4C.Na3PO4D.Na2HPO4的答案是什么.用刷刷题APP,拍照搜索答疑.刷刷题(shuashuati.com)是专业的大
Is H2SO3 or H2CO3 expected to be more acidic in an aqueous solution? Explain. Which of the following does not describe an acidic solution? a) The pH is less than 7. b) The OH- is 1 x 10-4 M. c) The OH- is less...
What is the value of Kb for its conjugate base, the NO2- ion? Carbonic acid, H2CO3 is a weak acid. Its first Ka is 4.5 x 10-7. Calculate the Kb of its conjugate base. 1. Calculate the Ka of the conjugate acid of a weak base ...