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Analisi Sistematica dei Cationi - CTF

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<strong>Analisi</strong> <strong>Sistematica</strong> <strong>dei</strong> <strong>Cationi</strong><br />

Secondo gruppo analitico: separazione sottogruppi<br />

As2S5 +3S 2– 3– =2AsS4 (ione tioarseniato) (1)<br />

As2S3 +3S 2– 3– =2AsS3 (ione tioarsenito) (2)<br />

AsS 3 +S x =AsS 4 +S x-1 (3)<br />

3– 2– 3– 2–<br />

2–<br />

SnS 2 +S 2– =SnS 3 (ione tiostannato) (4)<br />

2– 2– 2–<br />

SnS + S x =SnS 3 +S x-2 (5)<br />

Dott. Giuseppe La Regina, Corso di <strong>Analisi</strong> Chimico-Farmaceutica e Tossicologica I (M-Z)

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