HEATS OF REACTION AND HESSS LAW
When reactions take place, energy in the form of heat is either absorbed
(endothermic) or released (exothermic). The amount of heat involved in a reaction
depends upon the particular reaction studied or the am
Lab 4: Recrystallization
- Purify an impure sample of an antibiotic.
- Practice the crystallization technique.
The purpose of this experiment is to introduce the technique of crystallization, a
very common procedure used to purif
The Equilibrium Constant
In this experiment I calculated the equilibrium constant for the reaction
shown below under different conditions to determine if the equilibrium
constant is really constant
NSCC Chem 161- Winter 2014
January 29, 2014
January 21, 2014 , Lab Partner: Jina Schun, conducted in laboratory at NSCC,
Redox titration lab
Analysis of bleach by redox titration
Introduction: Bleaches are one of many products that contain chemicals that work as oxidizing agents (others
include hair coloring, scouring powders, and toilet bowl c
Redox Titration of Hydrogen Peroxide and Determination of NaHCO3 in Alka Seltzer
Preformed January 28, 2014, Chem 161: NCCC Winter 2014
Hannah Overman Lab Partner: Jina Schun
The purpose of this lab is to determine the mass of gas releas
Label the reactants and the products.
Indicate the number of atoms of each element on each side.
Determine if the equation is balanced.
Balance if needed.
Identify each reaction as combination, decomposition, single
replacement, or double replacement.
Lab 3: Determination of % NaHCO3 in Alka Seltzer Tablets
- To determine the amount of NaHCO3 in Alka Seltzer tablets by observing the amount of
CO2 produced from the acid base reaction of HCO3- with acetic acid (in vinegar).
- To practice stoi
Lab 5: Molar mass of CO2
Objective: Experimentally determine the molar mass of CO2.
Pre-Lab Questions: (To be submitted at the beginning of lab) 3 points
1. Summary of the procedure in your own words.
2. Answer the following questions on a separate piece
CHEM 121 Lab 3: Stoichiometry
1. Use stoichiometry to determine the amount of NaHCO3 in Alka Seltzer tablets by
observing the amount of CO2 produced from the acid base reaction of HCO3- with acetic
acid (in vinegar).
2. Determine when a substa
Goals for Learning: PNS
Classification of sensory receptors; proprioceptors
Understand dermatomes, referred pain, and somatotopy
General Somatic Motor output in the PNS
Understand ascending tracts and pathways
Trace three ascending pathways and what
one or more electron pairs are shared by two atoms. To show
Lab 5: Synthesis of Aspirin
- To synthesize aspirin and better understand carbonyl chemistry.
- To analyze the aspirin for impurities.
Aspirin (acetylsalicylic acid) can be prepared by the reaction between salicylic
acid and acet
Lab 6: Reactions of Organic Compounds and Qualitative Analysis
- To better understand several chemical reactions.
- To identify an unknown chemical by testing its chemical and physical properties.
In this experiment, you will inv
Writing Complete Equations Practice
For each of the following problems, write complete chemical equations to describe the chemical
process taking place. Important note: There are a few physical processes on this sheet You
cant write an equation for a phys
Experiment no. 3
Qualitative analysis of an organic compound
Which elements build organic compound?
Carbon and hydrogen are present in organic compound. We will also prove if there is
any nitrogen, sulphur or halogen
Chem 31 SI 11/01/09
Chapter 7 Worksheet
Chapter 7 Worksheet
1. A) Draw a basic sine wave
B) Superimpose a second wave with the same wavelength but stronger amplitude
C) Superimpose a third wave with the same amplitude as the first but with a shorter wavel