PreparED Study Materials
CHM 234: Organic Chemistry 3
School: DePaul University
Number of Notes and Study Guides Available: 0
Videos
Determining Base Concentration Using KHP: Indicator Choice Solution
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Discover how to choose the right indicator for a titration involving Potassium hydrogen phthalate (KHP) and a strong base. Grasp the calculations from molar mass to pH and understand why Thymolphthalein is the ideal choice for a change near pH 8.95.
Classify: (a) Mixture (b) Element (c) Mixture (d) Compound
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
In this video, we classify substances as elements, compounds, or mixtures, with air and soy sauce as mixtures, iron as an element, and table salt as a compound.
Calculating the Amount of Cesium and Iodine in a 38.77g Cs-I Compound
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Learn how to calculate the amounts of Cesium and Iodine in a 38.77g sample of a Cs-I compound. Starting with a 125g compound this tutorial uses conversion factors to find 19.83g of Cesium and 18.94g of Iodine. Perfect for chemistry students seeking to master stoichiometry and compound analysis.
Molarity Calculations for Various Solutions: CH?OH, CaCl?, C??H?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Learn how to calculate the molarity of different solutions containing methanol, calcium chloride, and naphthalene. Essential for chemistry enthusiasts.
Utilizing Chemical Names and Symbols in Copper Cycle Analysis
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
Explore the power of chemical names and symbols in deciphering copper compound formation at each step of the copper cycle, with an illustrative example.
Number of molecules in 3.5g H?O, 56.1g N?, 89g CCl?, 19g C?H??O?
Want To Learn More? To watch the entire video and ALL of the videos in the series:
full solution
This video shows how to determine the number of molecules in a given sample by utilizing the concept of moles, Avogadro's number (6.022 x 10²³), and the molar mass of the substance. It provides step-by-step calculations for different substances, converting mass to the number of molecules and highlighting the versatile application of this approach.









