Effect Of Light On Some Reactions Jamb Chemistry Past Questions

Question 1

10cm³ of hydrogen fluoride gas react with 5cm³ of dinitrogen difluoride gas (N²F₂) to form 10₃ of a single gas. Which of the following is the most likely equation of the reaction?

jamb 1986

• A. HF + N₂F₂ \(\to\) N₂HF₃
• B. 2HF + N₂F₂ \(\to\) 2NHF₂
• C. 2HF + N₂F₂ \(\to\) N₂H₂F₃
• D. HF + 2N₂F₂ \(\to\) N₄HF₂

Question 2

In the reaction N2(g) + O(g)

↔ 2NO(g) produced i an increase in the total pressure will?

jamb 1982

• A. cause less nitrogen to be produced in the equilibrium mixture
• B. cause less nitric oxide to be produced in the equilibrium mixture
• C. cause more nitric oxide to be produced in the equilibrium mixture
• D. cause more oxygen to be produced in the equilibrium mixture
• E. have no effect