Exams › NEET › Chemistry

Consider the reaction N₂(g) + 3H₂(g) → 2NH₃(g) The equality relationship between d[NH₃]/dt and -d[H₂]/dt is

1. d[NH₃]/dt = -d[H₂]/dt
2. d[NH₃]/dt = -1/3 d[H₂]/dt
3. d[NH₃]/dt = -3 d[H₂]/dt
4. d[NH₃]/dt = -2/3 d[H₂]/dt

Correct answer: d[NH₃]/dt = -1/3 d[H₂]/dt

Solution

The stoichiometric coefficients in the reaction indicate that 3 moles of H₂ are consumed for every 2 moles of NH₃ formed. Thus, the rate of formation of NH₃ is one-third the rate of consumption of H₂, with opposite signs due to consumption.

Related NEET Chemistry questions

• Why is catalyst added while preparing oxygen from decomposition of \( K C l O_{3} ? \)
• In the Arrhenius equation \( k=A e^{E / R T} \) rate will be constant at:
• As the concentration of reactants increases:
• Assertion The rate of reaction can also increase w.r.t its product if one of the product act as catalyst. Reason A catalyst lowers the activation energy of reactions. Read the above assertion and reason and choose the correct option regarding ¡t.
• Assertion Chlorine reacts more rapidly with \( \boldsymbol{H}_{2}, \) in comparision to \( \boldsymbol{O}_{\mathbf{2}} \) Reason \( D-C l \) bond is stronger in comparison to \( H-C l \) bond
• In the Haber process for the industrial manufacturing of ammonia involving the reaction \( N_{2}(g)+3 H_{2}(g) \rightleftharpoons 2 N H_{3}(g) \) at 200atm pressure in the presence of a catalyst, a temperature of about \( 500^{\circ} \mathrm{C} \) is used. This is considered as optimum temperature for the process because:

⚔️ Practice NEET Chemistry free + battle 1v1 →