Question

Nitrite (NO2–) interferes in the ‘ring-test’ of nitrates (NO3–). Among the following reagent(s) that can be used for the removal of nitrite is/are I. NH4Cl II. (NH2)2CS (thiourea) III. NH2SO3H (sulphamic acid)

Answer 1

Answer:

here is the answer bro

Explanation:

I: NH4​Cl

NaNO2​+NH4​Cl→NaCl+NH4​NO2​

NH4​NO2​heat

​N2​↑+2H2​O

II: (NH2​)2​CS (thiourea)

2NaNO2​+H2​SO4​→Na2​SO4​+2HNO2​

2HNO2​+SO(NH2​)2​→SO2​+N2​+3H2​O

III: NH2​SO3​H (sulphamic acid)

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