Tests For NO2‐

Question 1

Which is the only nitrite that is water insoluble?

Answer 1

AgNO2

Question 2

What happens to nitrites in acidic medium

Answer 2

They undergo disproportionation to give NO3‐ and NO gas

Question 3

NaNO2+ HCl

Answer 3

NaCl + HNO2

Question 4

NO+ O2, where are the brown fumes formed?

Answer 4

NO2, top of the test tube

Question 5

Why are N2O4 and NO2 known as mixed anyhydrides?

Answer 5

They both give HNO2 and HNO3

Question 6

Does NO2- perform brown ring test?

Answer 6

Yes

Question 7

[Fe(H2O)6]SO4 + NO, what is the oxidation state of NO in product

Answer 7

[Fe(H2O)5NO]SO4²‐,+1

Question 8

NO2- + KI dil acid

Answer 8

I2+ NO + water

Question 9

NO2- + MnO4‐ acidic medium

Answer 9

Mn²+ + NO3²- + water

Question 10

NH4Cl + NaNO2

Answer 10

NH4NO2

Question 11

What does NH4NO2 give on heating

Answer 11

N2 gas