Enthalpy and Entropy in Dissolution and Precipitation Inventory (E2DPI)

Purpose

The Enthalpy and Entropy in Dissolution and Precipitation Inventory (E2DPI) was developed to measure student understanding of the dissolution of ionic solutes, aqueous precipitation reactions, and the enthalpy and entropy changes that accompany these processes.

Population

The E2DPI is commonly administered in college chemistry courses.

Typical Performance

Below are the performance results from the initial instrument development for three populations: second-semester general chemistry (GC II), post-organic General Chemistry II (PO-GC II), and physical chemistry or biophysical chemistry (PC/BPC) at either a medium-sized midwestern university or a large, research intensive midwestern university.

Example question

Validity

Study describing the validation process for the E2DPI:

Abell, T. N., & Bretz, S. L. (2019). Development of the enthalpy and entropy in dissolution and precipitation inventory. Journal of Chemical Education, 96(9), 1804-1812.

Research

We recommend using Google Scholar to find the most up-to-date studies that use the instrument.

Example LASSO Report

Please follow this link to our example report for concept inventories.