Question 3
Gas Laws10 cm3 of hydrogen fluoride gas reacts with 5 cm3 of dinitrogen difluoride gas (N2F2) to form 10 cm3 of a single gas. Which of the following is the most likely equation of the reaction?
- A.HF + N2F2 → N2HF3
- B.2HF + N2F2 → 2NHF2
- C.2HF + N2F2 → N2H2F4
- D.HF + 2N2F2 → N4HF5.
Show the answer and explanation
Answer: B (2HF + N2F2 → 2NHF2)
Explanation
By Gay-Lussac's law the volumes 10 : 5 : 10 give the mole ratio 2 : 1 : 2. Only 2HF + N2F2 → 2NHF2 has this ratio and is balanced.