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English Translations » 化工分析圈 » 【Daily Question】Chemical Analysis Edition 2019.10.11

【Daily Question】Chemical Analysis Edition 2019.10.11

2019-10-11View Original

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This post was last edited by zjp on 2019-10-11 13:17. Multiple-choice question: When titrating the following ( ) polyacids with NaOH solution, two pH jumps occur. A. H2SO3 (Ka1=1.3×10^-2, Ka2=6.3×10^-8)
B. H2CO3 (Ka1=4.2×10^-7, Ka2=5.6×10^-11)
C. H2SO4 (Ka1≥1, Ka2=1.2×10^-2)
D. H2C2O4 (Ka1=5.9×10^-2, Ka2=6.4×10^-5)
A
Reply #22019-10-11
A, H2SO3 (Ka1=1.3×10-2, Ka2=6.3×10-8)
Reply #32019-10-11
D, H2C2O4 (Ka1=5.9×10-2, Ka2=6.4×10-5)
Reply #42019-10-11
A, H2SO3 (Ka1=1.3×10-2, Ka2=6.3×10-8)
Reply #52019-10-11
A, H2SO3 (Ka1=1.3×10-2, Ka2=6.3×10-8)

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Translated at 2026-07-23 10:54:38

Original: https://bbs.hcbbs.com/thread-2787040-1-1.html

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