Rate of Reaction Lab Report

Document Type:Lab Report

Subject Area:Chemistry

Document 1

Factors that affect the rate of reaction, such that their disintegration and dissolution rates are affected include environmental factors as well as pharmaceutical factors. Chemical reactions depend exclusively on temperature, catalysts presence and surface area (Mota, Carneiro, Queimada, Pinho, & Macedo, 2009). Just like any other tablet, disintegration rate affects dissolution rate. In this experiment, the reaction rate of antacid tablets was studied with respect to temperature changes of the solvent (water). Variables • Independent variable: The temperature of Solvent • Dependent variable: Rate of reaction • Controlled variable: Pressure, surface area, and concentration of reactants Question • How does changing the temperature of Solvent affect the rate of reaction? Hypothesis • It is expected that increase in temperature of solvent would increase the rate of reaction. The procedure was repeated from step 1 to step 8 for Trial 2.

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Except for this trial, the water was in the room temperature. The procedure was repeated from step 1 to step 8 for Trial 3. Except for this trial, the hot water was used. The temperature of the water and the time taken for Dissolution was recorded in a table. In this experiment, temperature and its effects on dissolution of the tablets were analyzed. In this experiment, the dissolution rate of the antacid tablets were expected to increase with increase in temperature as stated in the hypothesis. This means that, higher temperatures will increase rate of reaction and therefore, increase dissolution rate. From the results of this experiment, the hypothesis was justified and therefore, the experiment was correct. The results of this experiment revealed that increase in temperature of the solvent increased the dissolution rate of the antacid tablets.

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938 g/s, and at 330C, the rate of dissolution was 4. 761 g/s. These results indicate that increase in temperature have an effect on rate of reaction and therefore, increase dissolution rate of these tablets. The increase in rate of reaction with increase in temperature is attributed to the increase in kinetic energy. Since heat is a form of energy, the tablets absorb this increased energy and this leads to increase in kinetic energy of the tablet particles. Temperature increase will lead to dissolution rate increase. The experiment would have been more inclusive if smaller temperature intervals were used, but the same hypothesis will apply. References Bayer. Effects of Temperature on rate of reaction. Retrieved from Alka-seltzer: Bayer Global: http://ww. A.

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