“stannate”的概念、定义、翻译、参考文献-科学参考

stannate

Chemistry

A compound formed by reaction of tin oxides (or hydroxides) with alkali. Tin oxides are amphoteric (weakly acidic) and react to give stannate ions. Tin(IV) oxide with molten alkali gives the stannate(IV) ion
${SnO}_{2} {+ 2 OH}^{-} \to {SnO}_{3}^{2-} {+ H}_{2} O$
In fact, there are various ions present in which the tin is bound to hydroxide groups, the main one being the hexahydroxostannate(IV) ion, Sn(OH)₆²⁻. This is the negative ion present in crystalline ‘trihydrates’ of the type K₂Sn₂O₃.3H₂O. Tin(II) oxide gives the trihydroxostannate(II) ion in alkaline solutions
${SnO (s) + OH}^{-} {(aq) + H}_{2} O (l) \to {Sn (OH)}_{3}^{-} (aq)$
Stannate(IV) compounds were formerly referred to as orthostannates (SnO₄⁴⁻) or metastannates (SnO₃²⁻). Stannate(II) compounds were called stannites.

单词	stannate
释义	stannate Chemistry A compound formed by reaction of tin oxides (or hydroxides) with alkali. Tin oxides are amphoteric (weakly acidic) and react to give stannate ions. Tin(IV) oxide with molten alkali gives the stannate(IV) ion ${SnO}_{2} {+ 2 OH}^{-} \to {SnO}_{3}^{2-} {+ H}_{2} O$ In fact, there are various ions present in which the tin is bound to hydroxide groups, the main one being the hexahydroxostannate(IV) ion, Sn(OH)₆²⁻. This is the negative ion present in crystalline ‘trihydrates’ of the type K₂Sn₂O₃.3H₂O. Tin(II) oxide gives the trihydroxostannate(II) ion in alkaline solutions ${SnO (s) + OH}^{-} {(aq) + H}_{2} O (l) \to {Sn (OH)}_{3}^{-} (aq)$ Stannate(IV) compounds were formerly referred to as orthostannates (SnO₄⁴⁻) or metastannates (SnO₃²⁻). Stannate(II) compounds were called stannites.
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