Question

Which of these statements about reaction rates is accurate? All chemical reactions occur at the same rate. All chemical reactions occur at a fast rate. All chemical reactions occur at a slow rate. All chemical reactions occur at different rates.

Answer 1

Answer:

All chemical reactions occur at different rates.

Explanation:

The rate of a chemical reaction can the defined as the speed at which the chemical reaction occurs. It can also be defined as the speed at which the reactants disappear during a reaction or the speed at which products form.

All chemical reactions occur at different rates depending on some factors which include:

• Concentration of reactants or pressure of reactants in case of gases
• Surface area of reactants (in case of solid)
• Temperature of reactions
• Nature of reactants
• Presence/absence of catalysts.

The correct answer is that "all chemical reactions occur at different rates".

Answer 2

Answer:

The correct answer is "All chemical reactions occur at different rates".

Explanation:

The reaction speed is given by the amount of substance that is transformed into a given reaction per unit volume and time. Several factors influence the speed of a chemical reaction. One of them is the concentration of the reagents and the other the temperature, as well as the pressure.

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