DIY History | Transcribe | Scholarship at Iowa | Derivatives of Hydroxylamine by Agnes Elizabeth Otto, 1892 | Derivatives of Hydroxylamine by Agnes Elizabeth Otto, 1892, Page 35

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Derivatives of Hydroxylamine by Agnes Elizabeth Otto, 1892

Derivatives of Hydroxylamine by Agnes Elizabeth Otto, 1892, Page 35

[page]34[/page]

ferrous sulphate.
(NH[subscript]3[/subscript]OH)[subscript]2[/subscript]H[subscript]4[/subscript] [?.?] FeSO[subscript]4[/subscript] + 6H[subscript]2[/subscript]O + Na[subscript]2[/subscript]CO[subscript]3[/subscript] = 2(NH[subscript]3[/subscript]OH) + 2Na[subscript]2[/subscript]SO[subscript]4[/subscript] + Fe(OH)[subscript]2[/subscript] + CO[subscript]2[/subscript].
Fehling solution is then added in excess so as to precipitate all of the copper in the  filtrate  as cuprous oxide.
2NH[subscript]3[/subscript]OH + 4CuSO[subscript]4[/subscript] = 2Cu[subscript]2[/subscript]O + Na[subscript]2[/subscript]O + 4H[subscript]2[/subscript]SO[subscript]4[/subscript].
Wash the residue thoroughly and ignite. -- These are the results obtained.

II.
Weight of substance and tube -- 10.7975 gr.
Weight of tube -- 9.6458 gr.
Weight of substance -- 1.1517 gr.
Weight of crucible -- 11.6871 gr.
Weight of crucible and residue  1" ignition -- 12.1651 gr.

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[page]34[/page] ferrous sulphate. (NH[subscript]3[/subscript]OH)[subscript]2[/subscript]H[subscript]4[/subscript] [?.?] FeSO[subscript]4[/subscript] + 6H[subscript]2[/subscript]O + Na[subscript]2[/subscript]CO[subscript]3[/subscript] = 2(NH[subscript]3[/subscript]OH) + 2Na[subscript]2[/subscript]SO[subscript]4[/subscript] + Fe(OH)[subscript]2[/subscript] + CO[subscript]2[/subscript]. Fehling solution is then added in excess so as to precipitate all of the copper in the filtrate as cuprous oxide. 2NH[subscript]3[/subscript]OH + 4CuSO[subscript]4[/subscript] = 2Cu[subscript]2[/subscript]O + Na[subscript]2[/subscript]O + 4H[subscript]2[/subscript]SO[subscript]4[/subscript]. Wash the residue thoroughly and ignite. -- These are the results obtained. II. Weight of substance and tube -- 10.7975 gr. Weight of tube -- 9.6458 gr. Weight of substance -- 1.1517 gr. Weight of crucible -- 11.6871 gr. Weight of crucible and residue 1" ignition -- 12.1651 gr.