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Alka Seltzer Chips

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The rate of a chemical reaction can be raised by temperature, concentration of solutions, catalysts, etc. Increasing the surface area of a solid reactant is one way the rate of reaction can be sped up. If the surface area is increased, then more particles are exposed to reactants, there are more collisions, and these two variables overall speed up the rate of reaction. (BBC, 2014) A solid that is found in a solution can only react when particles collide with the surface area of the solid. When the area of the surface of the solid is bigger, then more particles are able to collide against it per second and the rate of the chemical reaction happening increases. (Chem4kids.com)A powdered solid will produce a faster reaction than if the same mass of the solid is presented in a single clump or small pieces. …show more content…
A solid broken down into powder has the largest surface area, because it is broken into smaller particles and each of those particles has its own surface area. This increases the overall surface area. (BBC, 2014) This is why catalysts are often used in the form of powder. Hydrochloric acid or HCl is a strong acid that reacts against the Alka-Seltzer tablets during this experiment. The Alka-Seltzer tablet’s main component is sodium bicarbonate, also known as baking soda, having a chemical formula called NaHCO3. Because Alka-Seltzer tablets are carbonates, they react with strong acids like HCl to form compounds that are different chemical composition than the initial compounds. This is known as undergoing a chemical reaction. Other carbonates like calcium carbonate produce similar reactions. When adding Vitamin C tablets to hydrochloric acid, it initiates a chemical reaction called a double displacement reaction. For this reaction, the ion of one compound exchanges with the ion in another compound following the general formula: AB+XY forms AY+XB.

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