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Name:

Biya Rajeev

Section:

CHM 115L tues 6 pm

Date:

11/ 19/ 19

CHM-115L Qualitative Analysis Lab Summary Report Sheet Activities 1. Data Analysis Part A Complete the Part A Results table. If no information was gathered for a specific test, then enter N/A. Do not leave any box blank. Part A Results Table Compound Solubility Test A

Iodine Test

Acetic Acid Test (Step 5) bubbles

pH Test Strip

Sodium Hydroxide Test N/A

Benedict’s Test

N/A

Acetic Acid Test (Step 9) N/A

Plaster of Paris (CaSO4) Chalk (CaCO3)

No

orange

No

Blue/blac k

N/A

N/A

N/A

N/A

N/A

C

Cornstarch (C12H22O11)

No

Blue/blac k

N/A

N/A

N/A

N/A

N/A

D

Glucose (C6H12O6)

Yes

N/A

N/A

Light Green

N/A

No precipitate

Yes

E

Insecticide (H3BO3)

No

orange

No bubbles

N/A

N/A

N/A

N/A

F

Epsom salt (MgSO4)

Yes

N/A

N/A

Orange

N/A

N/A

N/A

G

Baking soda (NaHCO3)

Yes

N/A

N/A

Dark green

Bubbles

N/A

N/A

H

Drain opener crystals (NaOH)

Yes

N/A

N/A

Blue

No bubbles

N/A

N/A

I

Washing soda

Yes

N/A

N/A

Blue

No bubbles

N/A

N/A

B

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N/A

Name:

Biya Rajeev

Section:

CHM 115L tues 6 pm

Date:

11/ 19/ 19

(Na2CO3) J

Table salt (NaCl)

Yes

N/A

N/A

Dark green

No bubbles

N/A

N/A

2. Data Analysis Part B a) Complete the following table using values from the notebook. If no information was gathered for a specific test, then enter N/A. Do not leave any box blank. Compound

Solubility Test

Iodine Test

Acetic Acid Test (Step 5)

pH Test Strip

Acetic Acid Test (Step 9)

Sodium Hydroxide Test

Benedict’s Test

Unknown (1) Unknown (2)

No

Orange

No bubbles

N/A

N/A

N/A

N/A

Unknown (3)

Yes

N/A

N/A

Orange

N/A

N/A

N/A

Unknown (4) Unknown (5)

Yes

N/A

N/A

Dark green

Bubbles

N/A

N/A

b) Identify the unknown compounds Unknown # 1

Identification NA

2

Insecticide

3

Epsom salt

4

Baking soda

5

NA

© 2021. Grand Canyon University. All Rights Reserved.

Name:

Biya Rajeev

Section:

CHM 115L tues 6 pm

Date:

11/ 19/ 19

3. Flowcharts a) Insert here the completed Flowchart A1.

A,B,C,D,E,F,G,H,I,J

A,B,C,E

D,F,G,H,I,J

E

C,B

A,E

A

© 2021. Grand Canyon University. All Rights Reserved.

Name:

Biya Rajeev

Section:

CHM 115L tues 6 pm

Date:

11/ 19/ 19

b) Insert here the completed Flowchart A2.

D,F,G,H,I,J

I,H

J,G

F

D

G D

I,H

D

© 2021. Grand Canyon University. All Rights Reserved.

Name:

Biya Rajeev

Section:

CHM 115L tues 6 pm

Date:

11/ 19/ 19

4. Post-Lab Questions 1. Describe the difference between quantitative and qualitative results. Give an example of each. Quantitative results involve numbers and accurate measurements while qualitative results are more subjective and connected to our senses. A quantitative measurement would be that a pencil is 5 ins tall. A Qualitative measurement would be that a pencil is yellow and lean. 2. Of the substances that produced bubbles upon the addition of acetic acid, what do they have in common? What gas was produced? Both substances have Oxygen atoms, this allows them to form gases such as carbon dioxide very easily. The gas that was produced was Carbon Dioxide. 3. Based on the test results, list each compound and properties determined about it through the different tests performed. Some of these can include solubility, polarity, acidity/basicity, and formation of gas. A – Plaster of Paris: -

Not soluble

-

Iodine test- no starch

-

Acetic Acid test – presence of carbonate/bicarbonate detected

-

pH test – NA

-

Sodium hydroxide test – NA

-

Benedict’s test – NA

B – Chalk: -

Not soluble

-

Iodine test – starch

-

Acetic Acid test – NA

-

pH test – NA

-

Sodium hydroxide test – NA

-

Benedict’s test – NA

C – cornstarch: -

Not soluble

-

Iodine test – starch

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-

Acetic Acid test – NA

-

pH test – NA

-

Sodium hydroxide test – NA

-

Benedict’s test – NA

Name:

Biya Rajeev

Section:

CHM 115L tues 6 pm

Date:

11/ 19/ 19

D – glucose: -

Soluble

-

Iodine test – NA

-

Acetic Acid test – NA

-

pH test – slightly acidic

-

Sodium hydroxide test – no presence of cations detected

-

Benedict’s test – presence of Glucose detected

E – Insecticide: -

Not soluble

-

Iodine test – no starch

-

Acetic Acid test – no presence of carbonate/bicarbonate

-

pH test – NA

-

Sodium hydroxide test – NA

-

Benedict’s test – NA

F – Epson salt: -

Soluble

-

Iodine test – NA

-

Acetic Acid test – NA

-

pH test – very acidic

-

Sodium hydroxide test – NA

-

Benedict’s test – NA

G – baking soda: -

Soluble

-

Iodine test – NA

-

Acetic Acid test – presence of carbonate/bicarbonate detected

-

pH test – slightly alkaline

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-

Sodium hydroxide test – NA

-

Benedict’s test - NA

Name:

Biya Rajeev

Section:

CHM 115L tues 6 pm

Date:

11/ 19/ 19

H – drain opener: -

Soluble

-

Iodine test – NA

-

Acetic Acid test – NA

-

pH test – alkaline

-

Sodium hydroxide test – NA

-

Benedict’s test – NA

I – washing soda: -

Soluble

-

Iodine test – NA

-

Acetic Acid test – no presence of carbonate/bicarbonate detected

-

pH test – alkaline

-

Sodium hydroxide test – NA

-

Benedict’s test – NA

J – table salt: -

Soluble

-

Iodine test – NA

-

pH test - Neutral

-

Acetic Acid test – no presence of carbonate/bicarbonate detected

-

Sodium hydroxide test – NA

-

Benedict’s test – NA

4. What was the most difficult part about identifying your unknowns? What was the easiest? A specific part didn’t stand out to be difficult, every test ran pretty smoothly and the flow chart made everything very clear, The flowchart was probably the most helpful when testing the unknown. 5. Copies of Notebook Pages

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Name:

Biya Rajeev

Section:

CHM 115L tues 6 pm

Date:

11/ 19/ 19

Submit the copies of the notebook pages recorded for this lab. Make sure that the notebook pages meet the criteria provided by the instructor.

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