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Effect of Sugar, Salt, and Flavorings Addition on Temperature Changes and Specific Heat Capacity in Citric Acid, Acetic Acid, and Ascorbic Acid Solutions Alfira Julian Pratiwi; Ekin Dwi Arif Kurniawan; Rafidah Almira Samosir; Mutia Ardila; Gioni Thesia Boru Simbolon; Afrilia Tria Ivanka; Muhammad Fadhli; Tetra Tasya Anggraini Butar; Eren Nazura; Moondra Zubir; Abd Hakim S
Indonesian Journal of Chemical Science and Technology (IJCST) Vol. 8 No. 2 (2025): JULY 2025
Publisher : Universitas Negeri Medan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24114/ijcst.v8i2.68735

Abstract

This study aims to evaluate the effect of the addition of additives in the form of sugar, salt, and flavorings on changes in temperature and type heat capacity in citric acid, acetic acid, and ascorbic acid solutions. The methodology used is a quantitative experimental approach with direct observation of temperature changes as well as calculation of enthalpy changes (ΔH) in various combinations of acidic and additive solutions. The results of the analysis showed that the types of additives exerted different effects on the thermal stability and heat capacity of each acidic solution. Sugars tend to provide the most optimal thermal stability with minimal fluctuations in ΔH change, while salts cause the greatest fluctuations. Flavorings show a more varied and inconsistent pattern of change. These findings provide in-depth insights into the thermal characteristics of organic acid solutions with additive modification, contributing to the development of applications in the fields of food, pharmaceutical, and applied chemistry education.
The Effect of Principal Leadership, Financing, and Community Participation on the Effectiveness of Facilities and Infrastructure Management at Al-Khoir Islamic Boarding School Denny Fitriani Hasibuan; Muhammad Fadhli
Amkop Management Accounting Review (AMAR) Vol. 5 No. 1 (2025): January - June
Publisher : Sekolah Tinggi Ilmu Ekonomi Amkop Makassar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37531/amar.v5i1.2531

Abstract

This study contains three objectives, including knowing the effect of principal leadership, financing, and community participation on the effectiveness of facilities and infrastructure management. This research method is quantitative. On the other hand, the use of sampling techniques is the Krinj and Morgan table of 45 respondents at Al-Khoir Islamic Boarding School. The data collection technique is a questionnaire. The results of the study interpreted that the principal's leadership variable had an influence (rho_a) of 0.622. Data analysis techniques using SmartPLS. While financing has an influence (rho_a) of 0.962. And community participation has an influence (rho_a) of 0.870 on the effectiveness of facilities and infrastructure management. Financing is the most dominant factor in this study. This implies that the success of facilities and infrastructure management in schools is highly dependent on how effectively funds are managed, allocated, and utilized to support operational activities and the development of educational facilities.