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Inorganic Chemistry

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22 Apr 2011 21:31:54 IST

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WHY THE BROWN RING IS FORMED AT THE JUNCTION OF TWO LAYERS IN BROWN RING TEST?

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WHY THE BROWN RING IS FORMED AT THE JUNCTION OF TWO LAYERS IN BROWN RING TEST?

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vijay kharya

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23 Apr 2011 22:51:19 IST

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because of brown colored complex of [ Fe(H2O)5 NO] at the junction, morever bown ring is not neccessarily formed at the junction, if u add the conc. H2so4 quickly then there will be a brown colouration in the solution, and no clear ring

ankurkumar

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24 Apr 2011 23:16:03 IST

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his experiment u add acid slowly along the wall .ring must be formed on the surface. inner ring formed will be unstable because the complex is unstable and breaks inside easily

Shreyaarya

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27 Apr 2011 00:49:32 IST

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If one performs the experiment carefully the brown ring is obtained due density difference.

Bodhisattwa Purkayastha

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3 May 2011 02:11:37 IST

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be careful not to disturb the solution in the test tube and to keep it in the cold bath since high temperature does not ease the complex formation.

Shubham Bharti

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30 Jan 2012 21:02:32 IST

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H2SO4 being heavier forms the lower layer and reacts only with small amount of nitrate and FeSO4 at its surface , therefore a brown ring is formed at the junction of two layers

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