Analisis Data Gas dengan Mathcad: Penetapan Persamaan Keadaan dengan Fitting Paramater

Parsaoran Siahaan

doi:10.14710/jksa.2.4.138-146

DOI: https://doi.org/10.14710/jksa.2.4.138-146

Analisis Data Gas dengan Mathcad: Penetapan Persamaan Keadaan dengan Fitting Paramater

Parsaoran Siahaan

Chemistry Department, Faculty of Sciences and Mathematics, Diponegoro University, Indonesia

Published: 30 Nov 1999.

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Abstract

Analisis data adalah salah satu tahap penting dalam penelitian kimia. Kesalahan dalam menganalisis data akan menyebabkan kebingungan dalam menjawab hipotesa, permasalahan dan tujuan penelitian. Kesalahan analisis data akan menghasilkan kesimpulan yang salah. Kesalahan dalam menarik kesimpulan berarti kesalahan dalam menjelaskan suatu sistem. Hasil-hasil penelitian tentang perilaku sistem gas menunjukkan bahwa gas dapat dikelompokkan dalam dua bagian yaitu gas ideal dan gas nyata. Gas ideal mengikuti hukum gas ideal PV = nRT dengan harga tetapan R adalah 0,0821 L.atm.K^-1 mol^-1. Sedangkan gas nyata mengikuti salah satu hukum gas nyata yaitu persamaan van der Waals nRT. Dari hasil analisis data suatu gas dengan Mathcad diperoleh bahwa bila gas diasumsikan mengikuti hukum gas ideal maka fitting terbaik terjadi bila harga R adalah 0,076 L.atm.K^-1mol^-1 dengan standar deviasi terkecil σ(R) adalah 0,993

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Keywords: Mathcad; Fitting; Persamaan Keadaan Gas

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Section: Research Articles

Language : ID

In Vol 2, No 4 (1999): Volume 2 Issue 4 Year 1999

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