A mixture is known to contain NO_(3)^(-) and NO_(2)^(-) before perform – InterviewSolution

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1.	A mixture is known to contain NO_(3)^(-) and NO_(2)^(-) before performing ring test for NO_(3)^(-). The aq. Solution should be made free of NO_(2)^(-). This is done by heating with
Answer» `NH_(4)Cl` `Zn` dust Conc. `HNO_(3)` DIL. `HNO_(3)` ANSWER :A

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