### OPTIMASI ALAT PRAKTIKUM TERMODINAMIKA HUKUM CHARLES GAY-LUSSAC UNTUK MAHASISWA REKAYASA POLITEKNIK NEGERI BANDUNG

#### Abstract

Abstract:. Based on the syllabus of thermodynamics course in several Engineering Study Programs at Politeknik Negeri Bandung, it shows a very high need for Applied Physics on the subject of Thermodynamics as a prerequisite course. To be able to understand the concept of thermodynamics through laboratory activities, in this research the design and optimization of the Charles Gay-Lussac’s Law device was carried out, the measurement results were confirmed by calculation data using literature. Charles's law states that at fixed pressure, the volume of ideal gas with a certain mass is directly proportional to its temperature and Gay-Lussac's Law states that if the gas in a closed container is kept constant then the gas pressure is directly proportional to its absolute temperature. The results of the design of the Charles’s law experiment device, on P = 925 mbar and T = 298 K, obtained the average pressure of the trial results is 1043 mbar. The test results from the setting of the device show the average coefficient of determination (R2) = 0.9969, meaning that the effect of temperature is strong on changes in volume at a fixed pressure. In the design of the Gay-Lussac’s law experiment, at 925 mbar, T = 297.6 K and the volume of air in the flask was 0.578 x 10-3 m3, the number of moles of the average test shows a relatively consistent value of 1.51 mmol that is in the order of 10-2 mol. The test results show the value of R2 = 0.9822, meaning that the effect of temperature is strong on changes in pressure at a fixed volume.

#### Keywords

Termodinamika; Hukum Charles Gay-Lussac

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#### References

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