Na(2)HPO(4)+ Reagent 'M'rarr white ppt. ...

`Na_(2)HPO_(4)+` Reagent `'M'rarr` white ppt. The reagent 'M' is:

`BaCI_(2)` solution

`AICI_(3)` solution

`MnSO_(4)` solution

`FeCI_(3)` solution

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A, B

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Na_(2)HPO_(4) solution in water is

A metal nitrate solution does not give white precipitate with concentrated hydrochloric acid but on dilution with water produces a white precipitate. The metal nitrate solution with K_(2)CrO_(4) and Na_(2)HPO_(4) reagents gives red and yellow precipitates respectively which are soluble in ammonia solution. The cation of the metal nitrate is:

MgSO_(4) on reaction with Na_(4)OH and Na_(2)HPO_(4) forms a white crystalline precipitate. What is its formula?

MgSO_(4) on reaction with NH_(4)OH and Na_(2)HPO_(4) forms a white crystalline precipitate. What is its formula ?

A buffer solution of 0.080M Na_(2)HPO_(4) and 0.020 M Na_(3)PO_(4) is prepared. The electrolytic oxidation of 1.0 mmol RNHOH is carried out in 100mL buffer to give RNHOH + H_(2)O rarr RNO_(2) + 4H^(o+) + 4e^(-) Calculate approximate pH of the solution after oxidation is complete pK_(a_(2)), pK_(a_(2)) , and pK_(a_(3)) of H_(3)PO_(4) are 2.12,7.20 , and 12.0 , respectively.

MgSO_(4)+NH_(4)Cl+Na_(2)HPO_(4) rarr White crystalline precipitate.

GRB PUBLICATION-SALT ANALYSIS-Multiple Objective Type

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