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Write equations for the reaction of : (i) silver bromide with hypo in photographic process. (ii) cobaltous chloride with excess KNO 2 in aqueous acidic solution.

Write equations for the reaction of :
(i) silver bromide with hypo in photographic process.              
(ii) cobaltous chloride with excess KNO2 in aqueous acidic solution.

Grade:11

1 Answers

Aditi Chauhan
askIITians Faculty 396 Points
6 years ago
(i) AgBr + 2 Na2S2O3 → Na3[Ag(S2O3)2] + NaBr
(Hypo) soluble complex
(ii) CoCI2 + 7KNO2 + 2CH3COOH → K3[Co(NO2)6] + 2CH3COOK + 2KCI + NO + H2O
Yellow ppt.
(potassium hexanitro
Cobaltate III)

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