Safety Data Chemistry Lab

Student Name: KAVIA FRASER

Access Code (located on the lid of your lab kit): KIT 4444

Lab Report Format Expectations

Utilize college level grammar and professional formatting when completing this worksheet. Report all equations in a proper mathematical format, with the correct signs and symbols. Pre-Lab Questions

• Although the experiment in this lab is conducted in a simulation, it is still important to recognize certain aspects of lab safety. Demonstrate your understanding of lab safety by explaining the proper steps to take if you were to spill a tiny amount of hydrochloric acid on your hand?

It will immediately causes sever damage to tissue, such as burning on contact.

• Describe a possible danger associated with putting food, soda, coffee, pencil erasers, etc. in your mouth while conducting your chemistry experiments? The chemical could be ingested, leading to poisoning, serious injuries or death.

• What information is given on a Material Safety Data Sheet? The potential hazards health, fire, reactivity and environmental and how to work safely with the chemical product.

• List optimum clothing, shoes, jewelry and hair arrangement for your chemistry labs. Fitting clothes, long pants and sleeves, an apron or lab coat, close toe shoes, remove Jewelry and tie long hair back out of the. Way.

• Some experiments in this course will utilize open flame, and for safety reasons you will need a fire extinguisher nearby. Provide either the expiration date of your fire extinguisher, or the last date it was inspected.

01/15/23

• How old are the batteries in your smoke detector? 2 weeks

• List the contents from a first aid kit that you could use to treat a minor cut. Bandages, gauze pads to prevent bleeding, ointments

• List the contents from a first aid kit that you could use to treat a minor burns Aloe vera gel, sterile water wet dressings, cool-gel. Burn dressings EXPERIMENT 1: NEUTRALIZATION OF ACIDS AND BASES

Introduction Questions

• 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. When these solutions are waste after an experiment.

• In this experiment, you will mix sodium bicarbonate, a weak base, with acetic acid

(vinegar), a weak acid, until they are neutralized (meaning they reach a pH of 7).

• If a stronger solution of sodium bicarbonate were to be used in this experiment, would more or less acetic acid be required to neutralize it? Explain your answer. More, a stronger solution of sodium bicarbonate would indicate the molarity of the solution or the percentage of the sodium bicarbonate species was high.

• If a weaker solution of sodium bicarbonate were to be used in this experiment, would more or less acetic acid be required to neutralize it? Explain your answer. It would take less acid to neutralize it.

• Why should one add acid to water rather than add water to acid when preparing solutions?

when acid and water are mixed, heat is generated. If you add water to acid, the acid could bubble or splash because it would be too concentrated immediately after pouring. Data and Observations

In the below table, input the chemical, the pH value tested and any other observations you have made during the simulated experiment.

Table 1: Initial Litmus Test Results

Container Chemical Contents pH Reading Additional

Observations

A 5ml water water PH7 Input

B 10ml of molar

hydrochloric acid HCI PH1 Input

C

0.5 sodium

bicarbonate - 100ml

graduated cylinder

and pour 100ml of

water

CNaHCO3 PH 9

Record your pH values for each addition of Sodium bicarbonate in the table below. Table 2: Neutralization

Total Amount of

NaHCO3 Added (g) pH Reading

0.5 (initial solution) PH 4

1 PH 5

1.5 PH 7

Insert a screenshot of your completed lab simulation below. To earn credit for this lab, you must also ensure that your name is incorporated into the photo. Results and Discussion

• Which container had the highest pH?

C

• Would you consider the contents of that container to be acidic or basic? ACID

• Which container had the lowest pH?

A

• Would you consider the contents of that container to be acidic or basic BASIC

• At what point was the solution in beaker “B” neutralized? By the time of use of test srtip B5, the solution in beaker B was neutralized to a PH of 7.

Contact this candidate