An electric cell or battery that can becharged by passing an electric currentthrough it. Because the chemical reaction inthe cell is reversible,current passed throughit in the opposite direction to which it sup-plies current will convert the reaction prod...[继续阅读]

    See ethanoate参阅221页ethanoate。...[继续阅读]

    See ethanoic acid参阅222页ethanoic acid。...[继续阅读]

    See acac参阅3页acac。...[继续阅读]

    See ethyne参阅223页ethyne。...[继续阅读]

    See carbon参阅108页carbon。...[继续阅读]

    a molecule that does notexhibit optical activity.See chirality描述没有旋光性的分子。参阅130页chirality。...[继续阅读]

    A substance that contains hydrogenand dissociates in solution to give hydrogenions :HA⇌H+ +A-More accurately,the hydrogen ion is solvated(a hydroxonium ion):HA +H2O⇌H3O++A-Strong acids are completely dissociated inwater. Examples are sulfuric ...[继续阅读]

    Having a tendency to release a pro-ton or to accept an electron pair from adonor. In aqueous solutions the pH is a mea-sure of the acidity,i.e.an acidic solution isone in which the concentration of H3O+ ex-ceeds that in pure water at the same tempera-ture...[继续阅读]

    A hydrogen atom in amolecule that enters into a dissociation equi-librium when the molecule is dissolved in asolvent. For example,in ethanoic acid(CH3COOH) the acidic hydrogen is the oneon the carboxyl group,-COOH分子溶解在溶剂中时进入解离平衡的分子中氢原子。 例如乙酸(CH3CO...[继续阅读]