Solubility product constant and thermodynamic values for the terbium trifluoride-water system

1982 ◽  
Vol 27 (1) ◽  
pp. 81-84 ◽  
Author(s):  
Manchery P. Menon
Keyword(s):  
Solubility Product ◽  
Water System ◽  
Solubility Product Constant

scholarly journals PENGARUH METODE PRAKTIKUM BERBASIS PROBLEM BASED LEARNING TERHADAP HASIL BELAJAR DAN KETERAMPILAN PROSES SAINS SISWA PADA MATERI KELARUTAN DAN HASIL KALI KELARUTAN KELAS XI IPA MAN 2 FILIAL PONTIANAK

2016 ◽  
Vol 4 (2) ◽  
Author(s):  
Fatimah Fatimah ◽  
Mahwar Qurbaniah ◽  
Tuti Kurniati
Keyword(s):  
Learning Outcomes ◽  
Significant Influence ◽  
Solubility Product ◽  
P Value ◽  
Science Class ◽  
Process Skill ◽  
Science Process Skill ◽  
Skill Test ◽  
Post Test ◽  
Solubility Product Constant

ABSTRACTThis study investigated to determine the effect of problem based on practical to the students’learning outcomes and science process skill on Solubility and Solubility Product Constant materials at grade XI of Science class, MAN 2 FILIAL Pontianak. Using pre experimental and one-group pretest post-test designs, this study employed grade XI students of Science class. The data collection technique used were measurement and observation. While the instruments utilized were pre-test, post-test, and science process skill test. The results of learning outcomes analysis of pretest, post-test, and science process skill test by using Wilcoxon (SPSS 17,0 for windos) and run with an alpha level of .05 (5%) revealed that this test rejected Ho and accepted Ha (P value (0,00) < (0,05). The Effect Size (ES) of learning outcomes was 3,53 and considered high. The Z table contributed significant influence of 49,98%. Furthermore, the Solubility Product Constant indicated 2,90 and considered high, as well. The Z table contributed significant influence of 49,81%. As a result there was correlation of problem based on practical to the students’ learning outcomes and science process skill on Solubility and Solubility Product Constant materials.Keywords: learning outcomes, problem based on practical to the students’ learning outcomes, science process skill

Measuring the solubility product constant of paramagnetic cations using time-domain nuclear magnetic resonance relaxometry

2015 ◽  
Vol 121 ◽  
pp. 14-17 ◽  
Author(s):  
Paulo Falco Cobra ◽  
Bruna Ferreira Gomes ◽  
Cirlei Igreja Nascimento Mitre ◽  
Lucio Leonel Barbosa ◽  
Lucinéia Vizzotto Marconcini ◽  
...  
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Time Domain ◽  
Solubility Product ◽  
Nuclear Magnetic Resonance Relaxometry ◽  
Solubility Product Constant ◽  
Nuclear Magnetic

Solubility and Complex-Ion Equilibria

2021 ◽  
pp. 313-324
Author(s):  
Christopher O. Oriakhi
Keyword(s):  
Metal Complexes ◽  
Solubility Product ◽  
Formation Constants ◽  
Aqueous Systems ◽  
Complex Ions ◽  
Ionic Compounds ◽  
Molar Solubility ◽  
Solubility Product Constant ◽  
Complex Ion

Solubility and Complex-Ion Equilibria broadens the previous chapter’s coverage of equilibria to include aqueous systems containing two or more solutes of slightly soluble ionic compounds and the formation of metal complexes in solution. Solubility equilibria which allow quantitative predictions of how much of a compound will dissolve under given conditions are covered. The meaning of the solubility product constant (K sp) and how to calculate it from molar solubility values is presented. Also discussed is determination of molar solubility from K sp. Calculations demonstrate how to predict the formation of a precipitate by comparing the ion product or solubility quotient (Q) with K sp. Formation constants of complex ions and calculations involving complex ion equilibria are explained.

From inorganic precipitation to organic aggregation: solubility product constant-mediated specific metal-ion lighting-up using a triazolium iodide organic fluorescence tag

The Analyst ◽  
2019 ◽  
Vol 144 (5) ◽  
pp. 1654-1659 ◽  
Author(s):  
Qing Kang ◽  
Yin Xiao ◽  
Yong Wang
Keyword(s):  
Metal Ion ◽  
Solubility Product ◽  
Solubility Product Constant ◽  
Inorganic Precipitation ◽  
Specific Metal

Innovation in sensing strategies is a continual goal pursued by analytical chemists.

scholarly journals The Development Higher Order Thinking Skill (Hots) As Questions In Chemistry Study (Solubility And Solubility Product Constant)

2021 ◽  
Vol 9 (1) ◽  
pp. 51
Author(s):  
Faucut Sarah ◽  
Ibnu Khaldun ◽  
Abdul Gani
Keyword(s):  
Critical Thinking ◽  
Solubility Product ◽  
Higher Order Thinking ◽  
Thinking Skills ◽  
Critical Thinking Skills ◽  
Thinking Skill ◽  
Teachers And Students ◽  
Computer Based ◽  
Solubility Product Constant

The significance of critical thinking as one of the 21st  century skills makes the Indonesian Ministry of  Education  and  Culture  integrate  Higher  Order Thinking  Skill  (HOTS)  in the  latest national curriculum. Students critical thinking skills to working on HOTS assessment are fundamental, especially in learning chemistry lessons. The research purpose is to analyze the quality of HOTS chemistry questions/ assessment and to observe the teachers and students responses to computer-based test instruments developed using Wondershare Quiz Maker Software (WQM). The research method used Research And Development (R & D) Borg & Gall model. The sample was determined by Random Sampling Technique in total 104 students from several high school in Banda Aceh, it is SMAN 4, SMAN 5, SMAN 8 and SMAN 11. The data analysis technique was through calculating the percentage score of the assessment quality and analyzing the question items quantitatively such as validity, reliability, difficulty level of the questions, differential question power tests and distracting question power using proanaltes. The results showed that the quality of HOTS in chemical questions tested (for the solubility subject and the solubility product constant in terms of qualitative analysis of the items) in the validation test gained average score, it is 98.1%, means the items are qualified categories. In terms of quantitative analysis question items, it reached 95% valid and 5% invalid and the reliability test score was 0.740, are in high category. The questions difficulty covers 95% medium and 5% are in difficult level. The questions differential power for each category is 65% good, 30% medium and 5% less. The teachers and students response to the development of the computer-based HOTS test instrument using WQM software was positive and show good result. The teacher response positively on score strongly agreed was 83.3% and agreed 16.7%, while the students response on score strongly agreed was 27.2% and 63.3% agreed. The research conclusion there is significant  students critical thinking skills improved  (in learning the solubility and the solubility product constant chapter) by using HOTS assessment using Wondershare Quiz Maker software.

scholarly journals ANALISIS FAKTOR-FAKTOR PENYEBAB KESULITAN BELAJAR SISWA PADA MATERI KELARUTAN DAN HASIL KALI KELARUTAN

2019 ◽  
Vol 3 (1) ◽  
pp. 17
Author(s):  
I Wayan Muderawan ◽  
I Gusti Lanang Wiratma ◽  
Muthia Zahra Nabila
Keyword(s):  
Solubility Product ◽  
External Factor ◽  
Teaching Method ◽  
Learning Difficulties ◽  
Internal Factors ◽  
Effective Learning ◽  
Chemistry Learning ◽  
Solubility Product Constant ◽  
Learning Interest ◽  
Calculation Ability

AbstrakPenelitian ini bertujuan mendeskripsikan faktor-faktor penyebab kesulitan belajar siswa SMA Negeri 2 Banjar dalam mempelajari materi kelarutan dan hasil kali kelarutan. Subjek penelitian ini adalah 85 orang siswa dari seluruh kelas XII MIPA. Jenis penelitian yang digunakan adalah penelitian kualitatif. Pengambilan data dilakukan dengan cara tes dan wawancara. Data yang diperoleh berupa informasi mengenai faktor-faktor penyebab kesulitan belajar siswa pada materi kelarutan dan hasil kali kelarutan. Hasil penelitian ini menunjukkan bahwa faktor-faktor penyebab kesulitan belajar siswa yang disebabkan oleh faktor internal, meliputi minat belajar kimia rendah, motivasi belajar kimia rendah, pemaknaan konsep siswa terhadap materi kelarutan dan hasil kali kelarutan rendah, pemahaman konsep pendukung materi kelarutan dan hasil kali kelarutan rendah, dan kemampuan siswa dalam aspek perhitungan lemah. Faktor eksternal, meliputi penyesuaian kemampuan siswa dalam penerapan metode mengajar guru dalam kelas kurang, cara guru mengelola pembelajaran kimia, pengaruh teman sebaya, dan waktu pembelajaran kimia yang kurang efektif.Kata Kunci: faktor kesulitan belajar, kelarutan dan hasil kali kelarutan Abstract This study aimed to describe the cause factors of students'learning difficulties at the SMA Negeri 2 Banjar in learning solubility and solubility product constant. The subjects were 85 students from all class XI MIA. The type of research was qualitative research. The data were collected by using test and interview. The data were the information about the cause factors of students’ learning difficulties insolubility and solubility product constant.  The result of this research showed internal factors that caused students'difficultiesof learning, namely less learning interest toward chemistry, less learning motivation toward chemistry, less meaning toward solubility and solubility product constant concepts, less understanding toward concepts supporting solubility and solubility product constant topic, less calculation ability. The external factor was less adjustment of students' capability into teacher’s teaching method used in classroom, the way teacher’s managed chemistry learning, friends influence, and less effective learning time. Key words: factors of difficulties of learning, solubility and solubility product constant 

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