Post-UTME Chemistry 2019 Objective — Question 13
Question 13 of 20 from the Post-UTME Screening (Post-UTME) Chemistry 2019 Objective paper, with the correct answer and a full explanation.
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Addition of dilute trioxonitrate (V) acid to a white salt produced brisk effervescence. The anion most likely to be contained in the salt is
- A. SO4 2-
- B. CO3 2-Correct
- C. NO3 -
- D. PO4 3-
Explanation
Brisk effervescence (gas released) when a dilute acid is added to a salt is characteristic of a carbonate reacting to release CO2.
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