Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
Could you please provide the balanced chemical equation for the reaction
![To a dry mortar and pestle add the three starting materials and gently mix the
solids. Do not pound dry nitrate salts as they pose a danger of explosion. Rather, use
a circular motion to grind the materials. Add a very small drop of water using a glass
pipette and then grind the materials slowly using circular motions to pulverize the
crystals for 10 min. Note any observations. You should obtain a wet powder. If you
obtained a paste, you have added too much water and would have to let the product
dry in air before proceeding.
Add ethyl acetate (5 mL) to the dry powder and continue to grind to dissolve any
unreacted starting material. Assemble a vacuum filtration with a Hirsh funnel
wetted with ethyl acetate. When you are ready, turn the vacuum on and transfer the
reaction mixture using a glass pipette to the center of the filter paper. Use additional
ethyl acetate (3 mL) to transfer the entirety of the product from the mortar, as well
as to wash the product. Discard the filtrate in the organic waste bottle and let the
precipitate air-dry for 15 min. The product is water soluble and somewhat
hygroscopic, avoid its exposure to humidity.
Weigh the solids to obtain the percent yield and determine its melting point. Note
be that although the product was purified of the organic starting materials by the ethyl
acetate wash, there may be unreacted sodium nitrite left. For the purposes of this
lab, we will assume that all of the nitrite reacted. However, to fully purify the
product, the dye may be washed with saturated sodium chloride solution followed
by cold methanol.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F60c05a9c-83c8-497e-baab-810304796aa0%2Ff82676aa-2741-4d87-aaf0-7f8db77d90df%2Flrf8ab4_processed.jpeg&w=3840&q=75)
Transcribed Image Text:To a dry mortar and pestle add the three starting materials and gently mix the
solids. Do not pound dry nitrate salts as they pose a danger of explosion. Rather, use
a circular motion to grind the materials. Add a very small drop of water using a glass
pipette and then grind the materials slowly using circular motions to pulverize the
crystals for 10 min. Note any observations. You should obtain a wet powder. If you
obtained a paste, you have added too much water and would have to let the product
dry in air before proceeding.
Add ethyl acetate (5 mL) to the dry powder and continue to grind to dissolve any
unreacted starting material. Assemble a vacuum filtration with a Hirsh funnel
wetted with ethyl acetate. When you are ready, turn the vacuum on and transfer the
reaction mixture using a glass pipette to the center of the filter paper. Use additional
ethyl acetate (3 mL) to transfer the entirety of the product from the mortar, as well
as to wash the product. Discard the filtrate in the organic waste bottle and let the
precipitate air-dry for 15 min. The product is water soluble and somewhat
hygroscopic, avoid its exposure to humidity.
Weigh the solids to obtain the percent yield and determine its melting point. Note
be that although the product was purified of the organic starting materials by the ethyl
acetate wash, there may be unreacted sodium nitrite left. For the purposes of this
lab, we will assume that all of the nitrite reacted. However, to fully purify the
product, the dye may be washed with saturated sodium chloride solution followed
by cold methanol.
![Fill in the reagents table below:
Substance
Sulfanilic acid
2-Naphthol
NaNO2
Acid Orange
Mass (g)
0.017
0.014
0.007
MW (g/mol)
173.2
144.16
68.99
350.32
Mmol
Equivalents
0.1
0.1
0.1
1
1
1](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F60c05a9c-83c8-497e-baab-810304796aa0%2Ff82676aa-2741-4d87-aaf0-7f8db77d90df%2Ffgy899r_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Fill in the reagents table below:
Substance
Sulfanilic acid
2-Naphthol
NaNO2
Acid Orange
Mass (g)
0.017
0.014
0.007
MW (g/mol)
173.2
144.16
68.99
350.32
Mmol
Equivalents
0.1
0.1
0.1
1
1
1
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