F. W. Fairholt

Section: Nickel(ll) Compounds and Reactionsmentioning

confidence: 99%

Reactivity of nickel

Birk¹,

Ronan²,

Bennett³

et al. 1991

“…The titration curve is an important tool for students to understand the principles underlying the titration process. , A titration curve simulation platform can provide a fast and convenient method of simulating titration curves with various parameters. Various platforms offer simulations of acid–base titrations, including those based on Spreadsheet, Excel, − LabVIEW, and Matlab . However, dedicated user-friendly tools specifically designed for simulating acid/base mixtures’ titrations are lacking.…”

Section: Introductionmentioning

confidence: 99%

Prelaboratory Practice with a Titration Simulation Program for Carbonate Mixtures

Fu,

Yang

et al. 2024

The double-indicator method is often used in the analysis of Na 2 CO 3 , NaHCO 3 , and NaOH mixtures (carbonate mixtures). In this method, the determination of the volumes at the first and second equivalence points plays a crucial role in analyzing the composition and content of the carbonate mixtures. Here, LabVIEW software was used to create a virtual titration simulation program, which can simulate the titration and the distribution fraction plots to help students in comprehending the titration process as well as facilitate the exploration of the relationship between the volumes of the first and second equivalence points for various components within the mixture. The program also includes a "Test" function that assesses students' comprehensive abilities in quantitatively analyzing the components in the mixture. The students achieved a score rate of 76.2%. The questionnaire survey indicates that the majority of students believe the program effectively enhances their understanding of the principles behind double indicator method and the process of mixtures' titration. Furthermore, they feel that the program boosts their confidence in performing real experiments.

“…However, these applications are not commonly available for widespread use, as some of these applications are outdated − and some require basic knowledge of the software . By comparison, MS Excel-based applications are used by many and in teaching different aspects of chemistry successfully. − Comprehensive MS Excel applications that graphically simulate all vital concepts of acid–base titrations are available. − However, the available Excel-based applications for titrations are complex and may be difficult for a student to follow by him or herself.…”

Section: Introductionmentioning

confidence: 99%

Graphical Application to Assist Students Understand the Basic Concepts in Acid–Base Titrations

Fernando

Perera

2022

During the 1960s, Edgar Dale published the concept that learners are likely to retain more information if they see and hear information rather than just listen. Therefore, many educational applications have been created for students to learn theoretical concepts through visuals and in an interactive manner. Microsoft (MS) Excel has been used in many of these applications due to ease of use and widespread applicability. The main objective of this research is to introduce an MS Excel application to study the theoretical concepts associated with acid−base titrations. This application allows the user to select the type of titration, K a /K b values where applicable, concentrations of the reagents, titration volume, commonly used indicators, and follow the variation in the titration curve. With the use of the application, students can clearly visualize the change in pH during the titration, buffer region, and the effect of reagent concentrations and K a /K b values on the titration curves. It further allows the user to determine the end point of the titration via a first derivative plot, observe the variation in fractional composition of the reactive species with pH, and identify the indicator best suited for the titration. The application was proven successful when used to teach the concepts of acid−base titrations to a group of high school students.