WAEC Chemistry 2018 Objective — Question 29
Question 29 of 50 from the West African Examinations Council (WAEC) Chemistry 2018 Objective paper, with the correct answer and a full explanation.
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Which of the following formula cannot be an empirical formula?
- A. CH
- B. CH₂
- C. P₂O₅
- D. N₂O₄Correct
Explanation
An empirical formula must be in its simplest whole-number ratio; N₂O₄ can be reduced further to NO₂, so it is not an empirical formula.
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