The reaction pathway diagram for an endothermic reaction is shown. $$$u, v$$$ and $$$w$$$ are known energy values. Which diagram shows the reaction pathway diagram when a catalyst is used in the reaction?

Chemistry

IGCSE&ALevel

CAIE

Exam No：0620_s24_qp_23 Year：2024 Question No：14

Answer:

Knowledge points:

6.3.1. State that some chemical reactions are reversible as shown by the symbol ⇌

6.3.10. State the typical conditions for the conversion of sulfur dioxide to sulfur trioxide in the Contact process as 450 °C, 200 kPa / 2 atm and a vanadium(V) oxide catalyst

6.3.11. Explain, in terms of rate of reaction and position of equilibrium, why the typical conditions stated are used in the Haber process and in the Contact process, including safety considerations and economic

6.3.2.1. the effect of heat on hydrated compounds

6.3.2.2. the addition of water to anhydrous compounds

6.3.3.1. the rate of the forward reaction is equal to the rate of the reverse reaction

6.3.3.2. the concentrations of reactants and products are no longer changing

6.3.4.1. changing temperature

6.3.4.2. changing pressure

6.3.4.3. changing concentration

6.3.4.4. using a catalyst

6.3.5. State the symbol equation for the production of ammonia in the Haber process

6.3.6. State the sources of the hydrogen (methane) and nitrogen (air) in the Haber process

6.3.7. State the typical conditions in the Haber process as 450 °C, 20 000 kPa / 200 atm and an iron catalyst

6.3.8. State the symbol equation for the conversion of sulfur dioxide to sulfur trioxide in the Contact process

6.3.9. State the sources of the sulfur dioxide (burning sulfur or roasting sulfide ores) and oxygen (air) in the Contact process

The reaction pathway diagram for an endothermic reaction is shown. $$\(u, v\)$$ and $$\(w\)$$ are known energy values. Which diagram shows the reaction pathway diagram when a catalyst is used in the reaction?

Answer:

Knowledge points:

Solution:

The reaction pathway diagram for an endothermic reaction is shown. $$\(u, v\)$$ and $$\(w\)$$ are known energy values. Which diagram shows the reaction pathway diagram when a catalyst is used in the reaction?

Answer:

Knowledge points:

Solution:

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