Chemistry lab
Congotown
CHEM101L_Lab_1_2.docx.docxLab 1 Introduction and Laboratory Safety CHEM101L
Student Name: Access Code (located on the lid of your lab kit): AC-LQRYFV5
1. What would you do if you spilled a tiny amount of hydrochloric acid on your hand?
I would neutralize the acid with sodium bicarbonate and then wash my hands with plenty of water.
2. Describe a possible danger than can occur if you put food, soda, coffee, pencil erasers, etc. in your mouth in while conducting your chemistry experiments?
They may interact with the chemicals being used which could result in hazardous results. Also, traces of chemicals could get on your pencil or eraser and then if you put it in your mouth you could be exposed to the chemicals.
3. What information is given on a Material Safety Data Sheet?
Chemical and physical properties of the chemical, general information including molecular formula and structure, PPE required while working with the chemical and other safe handling precautions such as what first aid to do in case of an accident and toxicity dangers while using.
4. List optimum clothing, shoes, jewelry and hair arrangement for your chemistry labs.
Fitting clothing, long pants and sleeves, an apron or lab coat, close toed shoes, remove jewelry and tie long hair back out of the way.
5. What is the date that your fire extinguisher was last examined?
March 16, 2019
6. How old are the batteries in your smoke detector?
2 months
7. List the contents from a first aid kit that you could use to treat a minor cut.
Antiseptic agents, sterile gauze, tape or bandage
8. List the contents from a first aid kit that you could use to treat a minor burn. Antibiotic ointment, gauze, ibuprofen or acetaminophen to relieve pain.
Experiment 1: Neutralization of Acids and Bases
Table 1: Initial Litmus Test Results
|
Container |
Chemical Contents |
Litmus Results |
Additional Observations |
|
A |
Water |
No change |
|
|
B |
Sodium Bicarbonate/ Water |
Dark Green |
Solution looked like salt water |
|
C |
Acetic Acid |
Orange |
It became fizzy when neutralizing |
Table 2: Neutralization
|
Amount of Acid (mL) |
Litmus Results |
|
1 |
light green |
|
2 |
Light Green |
|
3 |
Green |
|
4 |
Light Green |
|
5 |
Green |
Post-Lab Questions:
1. Most of the chemicals included in your Introductory Chemistry Lab kit can be discarded down a drain with copious amounts of water. Describe a situation in which you would need to neutralize (pH 7) a chemical before discarding down a drain. If it is too acidic or too alkaline.
2. Why should one add acid to water rather than add water to acid when preparing solutions? To prevent a large reaction occuring by slowly diluting it with less control.
3. At what point was the solution in beaker “B” neutralized? It neutralized very quickly at about 3 mL
4. Address the following scenarios: if a stronger solution of sodium bicarbonate was used in beaker B, would it require more or less acetic acid to neutralize and why? If a weaker solution of sodium bicarbonate was used in beaker B, would that solution require more or less acetic acid to neutralize it and why? Stronger Solution: It would take LESS to neutralize the acetic acid Weaker Solution: It would have taken LONGER to neutralize
5. Insert a photo of your completed experiment with your name and access code handwritten in the background.
