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Chemical Kinetics question

2019 · Q86
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Chemical Kinetics question

2019 · Q86

NEETChemistryChemical KineticsMCQ+4 / −1
For the chemical reaction
N2(g) + 3H2(g) ⇌ 2NH3(g)
the correct option is :
  1. A
    −d[N2]dt=2d[NH3]dt- {{d\left[ {{N_2}} \right]} \over {dt}} = 2{{d\left[ {N{H_3}} \right]} \over {dt}}−dtd[N2​]​=2dtd[NH3​]​
  2. B
    −d[N2]dt=12d[NH3]dt- {{d\left[ {{N_2}} \right]} \over {dt}} = {1 \over 2}{{d\left[ {N{H_3}} \right]} \over {dt}}−dtd[N2​]​=21​dtd[NH3​]​
  3. C
    3d[H2]dt=2d[NH3]dt3{{d\left[ {{H_2}} \right]} \over {dt}} = 2{{d\left[ {N{H_3}} \right]} \over {dt}}3dtd[H2​]​=2dtd[NH3​]​
  4. D
    −13d[H2]dt=−12d[NH3]dt- {1 \over 3}{{d\left[ {{H_2}} \right]} \over {dt}} = -{1 \over 2}{{d\left[ {N{H_3}} \right]} \over {dt}}−31​dtd[H2​]​=−21​dtd[NH3​]​
View written solutionFree

Correct answer: B

N2(g) + 3H2(g) ⇌ 2NH3(g

Rate of the reaction can be written as :

−d[N2]dt=−13d[H2]dt=+12d[NH3]dt - {{d\left[ {{N_2}} \right]} \over {dt}} = - {1 \over 3}{{d\left[ {{H_2}} \right]} \over {dt}} = + {1 \over 2}{{d\left[ {N{H_3}} \right]} \over {dt}}−dtd[N2​]​=−31​dtd[H2​]​=+21​dtd[NH3​]​

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