Exams › NEET › Chemistry

(t1/2)zero = [A]0/2k If [A]0 = doubled, t1/2 = doubled

1. (t1/2)zero = [A]0/2k
2. If [A]0 = doubled, t1/2 = doubled
3. t1/2 is proportional to [A]0.
4. t1/2 is proportional to k.

Correct answer: t1/2 is proportional to [A]0.

Solution

For a zero-order reaction, the half-life (t1/2) is directly proportional to the initial concentration [A]0, as given by the formula t1/2 = [A]0/2k. Doubling [A]0 will double t1/2.

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 →