“plumbate”的概念、定义、翻译、参考文献-科学参考

plumbate

Chemistry

A compound formed by reaction of lead oxides (or hydroxides) with alkali. The oxides of lead are amphoteric (weakly acidic) and react to give plumbate ions. With the lead(IV) oxide, reaction with molten alkali gives the plumbate(IV) ion
${PbO}_{2} {+ 2 OH}^{-} \to {PbO}_{3}^{2-} + H_{2} O$
In fact, various ions are present in which the lead is bound to hydroxide groups, the principal one being the hexahydroxoplumbate(IV) ion Pb(OH)₆²⁻. This is the negative ion present in crystalline ‘trihydrates’ of the type K₂PbO₃.3H₂O. Lead(II) oxide gives the trihydroxoplumbate(II) ion in alkaline solutions
${PbO (s) + OH}^{-} {(aq) + H}_{2} O (l) \to Pb {(OH)}_{3}^{2 -} (aq)$
Plumbate(IV) compounds were formerly referred to as orthoplumbates (PbO₄⁴⁻) or metaplumbates (PbO₃²⁻). Plumbate(II) compounds were called plumbites.

单词	plumbate
释义	plumbate Chemistry A compound formed by reaction of lead oxides (or hydroxides) with alkali. The oxides of lead are amphoteric (weakly acidic) and react to give plumbate ions. With the lead(IV) oxide, reaction with molten alkali gives the plumbate(IV) ion ${PbO}_{2} {+ 2 OH}^{-} \to {PbO}_{3}^{2-} + H_{2} O$ In fact, various ions are present in which the lead is bound to hydroxide groups, the principal one being the hexahydroxoplumbate(IV) ion Pb(OH)₆²⁻. This is the negative ion present in crystalline ‘trihydrates’ of the type K₂PbO₃.3H₂O. Lead(II) oxide gives the trihydroxoplumbate(II) ion in alkaline solutions ${PbO (s) + OH}^{-} {(aq) + H}_{2} O (l) \to Pb {(OH)}_{3}^{2 -} (aq)$ Plumbate(IV) compounds were formerly referred to as orthoplumbates (PbO₄⁴⁻) or metaplumbates (PbO₃²⁻). Plumbate(II) compounds were called plumbites.
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