A 5.0-gram sample of Fe(s) is to be placed in 100. milliliters of HCl(aq). Which changes will result in the fastest rate of reaction? 1. increasing the surface area of Fe(s) and increasing the concentration of HCl(aq) 2. increasing the surface area of Fe(s) and decreasing the concentration of HCl(aq) 3. decreasing the surface area of Fe(s) and increasing the concentration of HCl(aq) 4. decreasing the surface area of Fe(s) and decreasing the concentration of HCl(aq)

the answer is increasing the surface area of Fe(s) and increasing the concentration of HCl(aq).

the rate of reaction can be increased if the interaction between the reactants in better. by increasing the surface area of a solid, such as Fe, you make more possible each molecule of Fe to interact with HCl. Also, by increasing the concentration of HCl, it mean there is more molecule of HCl to interact with Fe.

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shrutiagrawal1798 shrutiagrawal1798 · Answer 2 · 2022-01-25T06:47:26+01:00

The rate of reaction has been increased when there has been increasing the surface area of Fe(s) and increasing the concentration of HCl(aq). Thus, option 1 is correct.

The rate of reaction has been defined as the consumption of the reactant or the formation of product with respect to time.

Factors affecting Rate of Reaction

The rate of reaction has been altered when there has been increased amount of the interaction between the reactant, there by results in the formation of more product molecules.

In the reaction of Fe and HCl, there has been increased interactions with the increase in the solid surface area. The increased in the concentration of the liquid HCl has been resulted in increased solute for formation of the product.

Thus, the rate of reaction has been increased when there has been increasing the surface area of Fe(s) and increasing the concentration of HCl(aq). Thus, option 1 is correct.

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