Chem 121 lab report Study guides, Class notes & Summaries

Experiment #: 9 Title: Inorganic Synthesis Purpose: In this lab, the synthesis of the inorganic compounds Alum, Calcium Carbonate, and Zinc Oxide will be carried out. Percent yields will be performed on all three of these experiments. Infrared Spectroscopy will be used to establish all structures. Procedure: Experiment 1: 1. Obtain 1-gram of scrap aluminum. 2. Place the aluminum in a beaker. 3. Add 50 ml of 20% Potassium Hydroxide to aluminum. 4. Heat the beaker in a hood (giving off H...

CHEM 121 Lab Report 7-Acid Base Titrations.

Title: Acid Base Titrations Purpose: In this lab, titration analyses will take place doing six different acid-base titrations. Titration is used to determine an unknown concentration of a substance. Procedure: Experiment 1: Weak acid, strong base Standardization titration was performed to determine the molarity of NaOH (Sodium Hydroxide) by titrating it against a weak acid, Potassium Hydrogen Phthalate. The acid is put in a beaker and phenolphthalein indicator and water is added. Titratio...

Experiment #: 10 Title: Urinalysis Purpose: In this experiment we will conduct a chemical examination of a simulated urine sample. The test will include several chemicals that should be routinely present in the blood or urine, which include chloride, phosphate ions, calcium ions, ammonium ions, proteins, sugars, and ketones. Procedure: Test 1: Urinalysis - Test for Chloride (Cl-): This test measures the amount of chloride in urine and is used to evaluate and manage acid-base, fluid, an...

CHEM 121 Lab Report 7-Acid Base Titrations.

CHEM 121 Lab Report 3: Quantitative and Qualitative Analysis

CHEM 121 Lab Report 10-Urinalysis.

CHEM 121 Lab Report 10-Urinalysis.

CHEM 121 LAB FINAL EXAM QUESTIONS WITH ALL POSSIBLE SOLUTIONS ANSWERED 2024/2025 When using the Tare function on a balance, start by (1). Then (2) to cancel out that mass. Finally, (3) and record the mass of your sample. 1) Placing the glassware on the balance 2) Press the Tare/Zero button 3) Add your sample to the glassware 5.43 g A balance with ±0.01 g tolerance 1.230 g A balance with ±0.001 g tolerance 4.0000 g A balance with ±0.0001 g tolerance A graduated cylinder contains 1...

Title: Reaction Chemistry Purpose: The purpose of this experiment is to observe various types of chemical reactions and their results which include six types of simple chemical reactions and reversible reactions. Also, to detect chemical changes, exothermic and endothermic reactions along with color change reactions and different reactions where precipitates form. The oxidation-reduction of methylene blue indicator is also performed to demonstrate the reversibility of a reaction. Procedure...