Question

Select all the correct answers. which changes will increase the rate of reaction during combustion? decreasing the area of contact between the reactants adding more oxygen to the reaction removing heat from the reaction changing the reactants from solid form to powdered form lowering the exposure of the reactants to air

Answer 1

Adding more oxygen to the reaction and changing the reactants from solid form to powdered form will increase the rate of reaction during combustion.

What are factors on which rate of chemical reactions depend?

The rate of a chemical reaction is affected by a number of factors, including temperature, the concentration of the reactants, the presence of a catalyst, and others.

• The rate of a chemical reaction rises with temperature because more reactant and product particles will collide as a result of the higher temperature.
• By converting the reactants from a solid into a powder, more collisions between the reactant particles will occur, which will speed up the production of the products. Increasing the surface area of the reactants also increases the rate of reaction.
• The rate of reaction will grow when the concentration of the reactants, such as increasing the amount of oxygen in the reaction that is one of the reactants, increases.

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