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Metal activity and reactivity oxidation and reduction reactions lab answers

13/10/2021 Client: muhammad11 Deadline: 2 Day

I would like you to write three lab reports about three different experiments. I will upload you the instructions on how does the report have to be done. Also, I will upload you the experiment file ( this file will contain everything data, question and answers, purpose, etc..) I would like you to rewrite this answers I wrote on your own words. I will also upload you a sample for an old lab report. I want two pages for each experiment six in total. Thank you!

Final Report

Exercise 1

CHEM 182 DL1 Anions, Cations, and Ionic Reactions

The anion in Unknown #103 was carbonate. I compared my observations in Data Table 1 and both Unknown #103 and carbonate had the same reactions.

1. What was the identity of the anion in Unknown #103? Explain how you used the observations recorded in Data Table 1 to reach this conclusion.

The anion in Unknown #104 is sulfide. I compared my observations in Data Table 1 to the observation of Unknown #104 and saw that 104 matched with sulfide.

2. What was the identity of the anion in Unknown #104? Explain how you used the observations recorded in Data Table 1 to reach this conclusion.

Copyright 2019 - Hands-On Labs | http://holscience.com 2 / 6

Date Table 1: Anion Confirmation Tests

AgNO3 + Na2S ==> Ag2S + NaNO3

3. Write the chemical equation for the ionic reaction between Na S and AgNO .2 3

AgNO3 + NaBr = NaNO3 + AgBr

4. Write the chemical equation for ionic reaction between NaBr and AgNO .3

Chemical Anion

NaBr Bromide

Na CO Carbonate

NaCl Chloride

NaI Iodide

Na SO Sulfate

Na S Sulfide

Unknown #103

Unknown #104

Chemical Observations: Addition of AgNO

NaBr

Na CO

2 3

2 4

2

CO3^2

S^2

3

It became white and a little cloudy

2 3

Copyright 2019 - Hands-On Labs | http://holscience.com 3 / 6

NaCl

NaI

Na SO

Na S

Unknown #103

Unknown #104

Chemical Observations: Addition of HCl

NaBr

Na CO

NaCl

NaI

Na SO

Na S

Unknown #103

Unknown #104

Cloudy and white around the outside and clear on the inside

Cloudy and white at the bottom and clear on top

Dark in the middle, cloudy and lighter around the edged

2 4 Clear

2 Turned brown in the middle, began to separate

Small particles

Brown in middle clear around

Still cloudy and still white

2 3 Still cloudy, bubbles start to form, white

No change. Clear on top cloudy on bottom

Started to separate

2 4 White and Cloudy

2 The brown becomes more separate from the clear

Bubbles form, white and cloudy

Some brown disappeared

Copyright 2019 - Hands-On Labs | http://holscience.com 4 / 6

Exercise 2

Data Table 2: Cation Flame Tests

After comparing results I can conclude that Unknown #105 is copper. The color is how I determined my final answer.

1. What was the identity of the cation in Unknown #105? Explain how you used the observations recorded in Data Table 2 to reach this conclusion.

I would conduct the tests that were used in this lab. I would put the unknown chemical in a well and add HCl. I would then record my observations. I would then conduct the flame test. After analyzing my observations I should be able to positively identify the chemical.

2. If you were asked to conf irm the identity of an unknown chemical such as lithium sulf ide (Li S), describe the tests that you would use to conf irm the identity. Use your results in both Exercise 1 and Exercise 2 to describe the observations in both the cation and anion tests that would allow the unknown to be conf irmed as lithium sulf ide.

2

Copyright 2019 - Hands-On Labs | http://holscience.com 5 / 6

Data Table 3: Complete Chemical Identification

Chemical Cation

KI Potassium

CaCl Calcium

LiOH Lithium

NaCl Sodium

Cu(NO ) Copper

Unknown #105

Unknown #106

Unknown #107

Chemical Observations: Flame Test

KI

CaCl

LiOH

NaCl

Cu(NO )

Unknown #105

Unknown #106

Unknown #107

2

3 2

Copper

Potassium

Calcium

Light Pink

2 Red

Vibrant Pink

Orange

3 2 Teal

Teal

Light Pink

Red

Copyright 2019 - Hands-On Labs | http://holscience.com 6 / 6

Chemical Cation

Unknown #105

Unknown #106

Unknown #107

Chemical Anion Test Observations

Unknown #105

Unknown #106

Unknown #107

Chemical Anion

Unknown #105

Unknown #106

Unknown #107

Chemical Complete Chemical Name and Formula

Unknown #105

Unknown #106

Unknown #107

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