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When equal volumes of 0.2M solutions of ...

When equal volumes of `0.2M` solutions of the following compounds are mixed, which combination forms a red precipitate?

A

`AgNO_(3)+Na_(2)S`

B

`AgNO_(3)+K_(2)CrO_(4)`

C

`NiCl_(2)+NaOH`

D

`CuSO_(4)+NH_(3)`

Text Solution

Verified by Experts

The correct Answer is:
B
`2Ag^(+) + CrO_(4)^(2-) rarr Ag_(2) CrO_(4) darr` (Red ppt.)
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GRB PUBLICATION-SALT ANALYSIS-E.Precipitation/Redox Reacttions
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