What are the observation when hydrogen sulphide passes throughk2cr2o7

Potassium Dichromate(K2Cr2O7) is oxidising agent and will oxidise Hydrogen sulfide(H2S) to Sulphur(S).

The orange color of Potassium dichromate is changed to green due formation of Chromium sulphate.

Explanation:

The balance chemical equation for the reaction is :

K2Cr2O7 = It is the commonly used inorganic reagent used for its oxidizing properties .It is crystalline , bright orange coloured.

In this reaction it oxidise Hydrogen sulfide  to sulfate .

Hydrogen Sulfide = It has Formula H2S . It is a colourless gas .

It is foul smelling and act as reducing agent .

In this reaction H2S reduces Potassium dichromate(Cr = +6) to Chromium Sulfate (Cr = +3)

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