Conjugate acid - Kyoyakusan

Japanese: 共役酸 - キョウヤクサン
Conjugate acid - Kyoyakusan

A term for a conjugate base. In the Bronsted acid-base theory, a Bronsted base with a proton H + attached is the conjugate acid for that base. For example, ammonia NH3 is

NH3 +H +NH4 +

In the reaction above, H + is received and NH4 + is formed, so NH4 + is the conjugate acid for NH3 .

H2O → H + + OH-

In the reaction above, if H 2 O is considered as an acid, OH- is the conjugate base (the acid with H + removed), but

H2O + H +H3O +

In the reaction above, H 3 O + is the conjugate acid to H 2 O.

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

Japanese:

共役塩基に対する用語.ブレンステッドの酸塩基の理論において,ブレンステッド塩基にプロトン H が結合したものが,その塩基に対する共役酸である.たとえば,アンモニアNH3は,

NH3 + H → NH4

の反応で H を受けとってNH4になるから,NH4はNH3に対する共役酸である.また,

H2O → H + OH

の反応で,H2Oを酸と考えれば,OHは共役塩基(酸から H を除いたもの)であるが,

H2O + H → H3O

の反応では,H3OはH2Oに対する共役酸である.

出典 森北出版「化学辞典(第2版)」化学辞典 第2版について 情報

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