Describe and explain the change, if any, to the percentage yield of $$$\mathrm{NH}_{3}(\mathrm{~g})$$$ produced in C compared to $$$\mathbf{A}$$$. ....................................................................................................................................... . ....................................................................................................................................... . ................................................................................................................................. (ii) Describe and explain the change to the rate of the forward reaction that occurs to establish the equilibrium in $$$\mathbf{C}$$$ compared to $$$\mathbf{A}$$$. You do not need to refer to the Boltzmann distribution in your answer. ....................................................................................................................................... . ....................................................................................................................................... . ....................................................................................................................................... . .................................................................................................................................

Chemistry

IGCSE&ALevel

CAIE

Exam No：9701_s24_qp_23 Year：2024 Question No：2(b)

Answer:

Knowledge points:

8.1.1 explain and use the term rate of reaction, frequency of collisions, effective collisions and non-effective collisions

8.1.2 explain qualitatively, in terms of frequency of effective collisions, the effect of concentration and pressure changes on the rate of a reaction

8.1.3 use experimental data to calculate the rate of a reaction

8.2.1 define activation energy, $ E_{\mathrm{a}}$, as the minimum energy required for a collision to be effective

8.2.2 sketch and use the Boltzmann distribution to explain the significance of activation energy

8.2.3 explain qualitatively, in terms both of the Boltzmann distribution and of frequency of effective collisions, the effect of temperature change on the rate of a reaction

Answer:

Knowledge points:

Solution:

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