PreparED Study Materials
CH 320: Quantitatve Analysis
School: Portland State University
Number of Notes and Study Guides Available: 0
Videos
H-Cl Bond Energy Explained: ?H Signs Formation & Breakage Dynamics
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the concept of bond energy with the H-Cl bond as a prime example. Delve into the energy dynamics of bond breaking (endothermic positive ?H) versus bond formation (exothermic negative ?H). Understand how the magnitude remains consistent but signs differ based on energy absorption or release.
Precipitation Reactions Explained: From Solution to Solid Formation
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Unravel the chemistry behind precipitation reactions and the creation of insoluble salts. Learn how aqueous ions interact to form solid precipitates, illustrated with examples like silver nitrate and sodium chloride. Understand their significance in fields from water treatment to qualitative analysis.
Aluminum & Iron(III) Oxide Reaction: Welding Heat & Calculations
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the chemical reaction between Aluminum and Iron (III) Oxide commonly used in welding. Learn to calculate the mass of Aluminum Oxide formed and identify the excess reagent. Dive deep into molar mass conversions stoichiometry and real-world applications in this chemistry tutorial.
Calculating the Mass of a Sucrose Crystal: A Chemistry Insight
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the fascinating world of chemistry as we calculate the mass of a sugar crystal with 1.8 x 10¹? molecules of sucrose. Using the concept of a mole and Avogadro's number, discover how to convert molecular numbers to milligrams. Grasp foundational principles in a clear, engaging format.
Validating & Correcting Chemical Equations: Ba(NO?)? to LiCl Reactions
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Dive into the accuracy of four chemical reactions involving compounds like Barium Nitrate and Lithium Chloride. Discover which reactions yield precipitates which are correct and which need correction. A comprehensive review from Barium Sulfate formation to Lead Chloride precipitation
Comparing Masses: Analyzing Water, Ethanol, Chloroform & Balsa Wood
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the relationship between mass, density, and volume using real-life examples, including water, ethanol, chloroform, and balsa wood. Learn the process of calculating mass and uncover which substance has the highest mass based on given conditions.


















