Post-UTME Chemistry 2016 Objective — Question 12

Question 12 of 20 from the Post-UTME Screening (Post-UTME) Chemistry 2016 Objective paper, with the correct answer and a full explanation.

Trioxonitrate (V) acid prepared in the laboratory has a yellow colour due to the presence of dissolved

A. N2O
B. NO2Correct
C. NO
D. NO3

Explanation

Dissolved NO2 (formed from partial decomposition of the acid) gives laboratory-prepared concentrated trioxonitrate(V) acid its characteristic yellow tinge.

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