Chem 104 lab Study guides, Class notes & Summaries

CHEM 104: Module 1 Exam General Chemistry II with Lab Exams – 2022- Portage Learning

Common Lab Equipment - Correct Answer Vial and cap Test tube Test tube holder Glass stirring rod Test tube brush Watch Glass Pipet Pasteur Pipet Pasteur Pipet rubber bulb Spatula Weigh boat Graduated cylinder Beaker Buret Wash Bottle Erlenmeyer Flask Retort Stand (Buret clamp, Utility clamp, Ring Clamp) Vacuum Flask Round Bottom Flask 9 well glass plate Buchner funnel funnel seal How to tell if glassware is clean - Correct Answer glass wets uniformly if the meniscus pull...

CHEM104 Module 1 Problem Set General Chemistry 2 with Lab Exam CHEM104 Module 1 Problem Set General Chemistry 2 with Lab Exam CHEM104 Module 1 Problem Set General Chemistry 2 with Lab Exam

CHEM 104: Module 1 Exam General Chemistry II with Lab Exams – 2022- Portage Learning

CHEM 104 Experiment 6: Electrochemistry - Portage Learning Purpose: The purpose of this lab was to study how redox reactions occur & to determine how conductivity can occur between metals & how we can predict if it will react or not. Procedure: Consider: Cu2+ + 2e- -> Cu(s) = reduction Fe(s) -> Fe2+ + 2e- = oxidation Part 1: 1. Utilizing a lightbulb device, we tested the conductive of the following items: a. Metal cylinder  good conductor (bright light) b. Water  poor conductor (no ...

Portage Learning Chem 104 Lab Exam M3: Exam

CHEM 104 Experiment 5: Buffers - Portage Learning Purpose: The purpose of this lab is to determine how buffers affect the pH of a solution in order to observe how a buffer is resistant to pH changes. Additionally, we determined how enzymes activity is affected by pH. Procedure: Part 1: Determine pH of sodium acetate in water & buffer 1. 2 pH electrodes are place in 2 separate beakers, one filled with tap water & one is filled with a pH 7 buffer (both have an approximate pH of 7) 2. A scoop of s...

CHEM 104 Experiment 8: Urinalysis - Portage Learning Purpose: The purpose of this lab is to carry out several experiments to evaluate the chemical makeup of a simulated urine sample. Procedure: Part 1: Chloride (Cl- ) 1. Prepare a mixture of AgNO3(silver nitrate) & Cl- solutions 2. These are both colorless solutions 3. Combine the solutions & note how they turn cloudy & form a white precipitate Part 2: Phosphate (PO3 -3) 1. Prepare a mixture of PO4 & (NH4)2MoO3 (Ammonium dimolybdate) solutions ...

CHEM 104 Experiment 4: Molarity of Vitamin C - Portage Learning Purpose: The purpose of this lab is to determine a better understand of solutions and concentrations relating to vitamins, specifically vitamin C or ascorbic acid. In order to do so, we measured the vitamin C in a few different fruits to determine the concertation of vitamin c in each. Procedure: Part 1: Determining the vitamin c concentration of iodine 1. Iodine was placed in a buret. 2. A solution was made from the commercial vit...