“chloroethanoic acids”的概念、定义、翻译、参考文献-科学参考

chloroethanoic acids

Chemistry

Three acids in which hydrogen atoms in the methyl group of ethanoic acid have been replaced by chlorine atoms. They are: monochloroethanoic acid (CH₂ClCOOH); dichloroethanoic acid (CHCl₂COOH); trichloroethanoic acid (CCl₃COOH). The presence of chlorine atoms in the methyl group causes electron withdrawal from the COOH group and makes the chloroethanoic acids stronger acids than ethanoic acid itself. The K_a values (in moles dm⁻³ at 25°C) are
$\begin{array}{l} {CH}_{3} COOH {1.7 \times 10}^{- 5} \\ {CH}_{2} ClCOOH {1.3 \times 10}^{- 3} \end{array}$
$\begin{array}{l} {CHCl}_{2} COOH 5.0 \times 10^{- 2} \\ {CCl}_{3} COOH {2.3 \times 10}^{- 1} \end{array}$

单词	chloroethanoic acids
释义	chloroethanoic acids Chemistry Three acids in which hydrogen atoms in the methyl group of ethanoic acid have been replaced by chlorine atoms. They are: monochloroethanoic acid (CH₂ClCOOH); dichloroethanoic acid (CHCl₂COOH); trichloroethanoic acid (CCl₃COOH). The presence of chlorine atoms in the methyl group causes electron withdrawal from the COOH group and makes the chloroethanoic acids stronger acids than ethanoic acid itself. The K_a values (in moles dm⁻³ at 25°C) are $\begin{array}{l} {CH}_{3} COOH {1.7 \times 10}^{- 5} \\ {CH}_{2} ClCOOH {1.3 \times 10}^{- 3} \end{array}$ $\begin{array}{l} {CHCl}_{2} COOH 5.0 \times 10^{- 2} \\ {CCl}_{3} COOH {2.3 \times 10}^{- 1} \end{array}$
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