Log in
Chemistry
2
answers
0
watching
36
views
23 Nov 2019

Oftern solutions can be hazardous in ways that are not necessarilyrelated to ther acidity of basicity. Briefly comment on the hazardsthat you need to be aware ofwhen working with:
1). 0.01M HNO3
2). 0.1M NH3/H2O

Watch
2
answers
0
watching
36
views

For unlimited access to Homework Help, a Homework+ subscription is required.

Unlock all answers

Get 1 free homework help answer.
Get unlimited access
Already have an account? Log in
Share
Jamar Ferry
Jamar FerryLv2
2 Jul 2019
Get unlimited access
Already have an account? Log in
Share
discord banner image
Join us on Discord
Chemistry Study Group
Join now

Related textbook solutions

Basic Chemistry
5 Edition,
Timberlake
ISBN: 9780134138046
Principles of Chemistry Molecular Approach
4th Edition,
Tro
ISBN: 9780134112831
Chemistry: Structure and Properties
2nd Edition,
Tro
ISBN: 9780134293936
Principles of Chemistry Molecular Approach
3rd Edition, 2014
Tro
ISBN: 9780321971944
Chemistry: A Molecular Approach
3rd Edition,
Tro
ISBN: 9780321809247
Chemistry: A Molecular Approach
5th Edition,
Tro
ISBN: 9780134874371
Principles of Chemistry: A Molecular Approach
4th Edition,
Tro
ISBN: 9780134895741
Chemistry: The Central Science
14th Edition, 2017
Brown
ISBN: 9780134414232

Related questions

Please put the following steps in order for the general procedurefor testing anions. Be sure to clean and then rinse your teststubes with distilled water before starting, when you get a freshsample of anion solution or are done for the day. To determinewhich of the three possible cations (sodium, potassium, or lithium)are in the anion unknown you must do a flame test as was done inexperiment 2.

1 2 3 4 5 Finally dispose of all used chemicals in the waste bottlefor exp. 5 in the fume hood and wash glassware.

1 2 3 4 5 To anion solutions that form a precipitate with 0.1Msilver nitrate add 0.5 mL of 6M nitric acid, observe and mixwell.

1 2 3 4 5 Test the unknown for the anion analysis (5B-xxxx) usingthe same tests and logic used for the known anion solutions.

1 2 3 4 5 Test fresh samples of anion solutions that did not reactwith 6M HCl or 0.1M barium nitrate by adding 0.5 mL of 0.1M silvernitrate, observe and mix.

1 2 3 4 5 Observe while adding 0.5 mL of 6M HCl to 1 mL samples ofthe anion solutions and then add 5 drops of 0.1M barium nitrate andobserve again.

1) If a student was supposed to pour 3 mL of 0.1 M NH3/H2O solution into a test tube to mix with phenolphthalein in order to turn red, but accidentally only poured 1 mL instead, what would happen when phenolphthalein indicator is added?

2) A student was supposed to pour 3 mL of 0.1 NH3/H2O solution into a test tube to mix with phenolphthalein in order to turn red. By accident, the student only poured 1 mL of NH3/H2O and then added 2 mL of H2O to bring it up to 3 mL. What would happen when the phenolphthalein is added?

3) What would happen if a student only added 1 drop of phenolphthalein indicator to a 3 mL NH3/H2O solution when they were supposed to add 3 drops?

4) Even people who are not familiar with the study of chemstry use the expression, "the litmus test," when referring to a test that produces an unquestionable result. On the basis of your experimental results, can you conclude that using litmus paper provides a "litmus test" for determining whether a solutuion is acidic or basic? Briefly Explain.

Hydroxyapatite is the primary constituent of tooth enamel andis the hardest substance in the human body.Addition of F- to drinking water convertsHydroxyapatite to Fluoroapatite, (Ca5(PO4)3F.the Ksp of Hydroxyapatite, (Ca5(PO4)3F is 6.8 X 10-37 and the Ksp for Fluoroapatite is 1 X 10-60. [Other pertinent K values can be found elsewhere (i.e. onlineor in textbooks) if necessary]


a)A) Write aseries of equilibrium expressions, a mass balance charge and acharge balance representing the complete reaction of thehydroxyapatite, including the solubility, and the further reactionof phosphate with water.

b)B) Write aseries of equilibrium expressions, a mass balance charge and acharge balance representing the complete reaction of thehydroxyapatite, including the solubility, and the further reactionof phosphate and Fluoride with water.

c)C) Calculatethe [Ca+2] in a saturated solution ofhydroxyapatite buffered at pH = 6.5, assuming further reaction ofPO4-3

d)D) Calculatethe [Ca+2] in a saturated solution ofFluoroapatite buffered at pH = 6.5, assuming further reaction withwater occur.

e)E) Comment ofthe significance of the results of part (C) and (d). why do youthis it is a good idea to fluoridate drinking water?

f)F) Write aseries of equilibrium expressions, a mass balance and a chargebalance representing the complete reaction of 0.01 M H4EDTA

g)G) Calculatethe [Ca+2] in a saturated solution ofhydroxyapatite containing 0.01M H4EDTABuffered at 6.5.

h)H) Calculatethe [Ca+2] in a saturated solution ofFluoroapatite containing 0.01M H4EDTABuffered at 6.5.

i)I) Smallamounts of EDTA are used as preservative in some foods. Comment onwhy this might not be a good idea


Weekly leaderboard

Home
Homework Help 3,900,000
Chemistry 830,000
Start filling in the gaps now
Log in