If you have performed the flame test for lithium on the test solution but you are...
If you have performed the flame test for lithium on the test solution but you are not sure about the results, what could you do to gain confidence in the test? Hint: there's sure to be a bottle of lithium chloride in the lab!
Homework Answers
Solution:
Each element has an exactly defined line emission in its discrete spectrum. Lithium makes a bright red color in flame. Lithium chloride is a colorless solid. It absorbs water, unlike other alkali metal chlorides. Thus, burning of lithium chloride will give the a bright pink color, which give a confidence for the student that color of luthium is darker than lithium chloride.
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If you have performed the flame test for lithium on the test
solution but you are...
Unit 2, Lab 1: Flame Test Name: &
Unit 2, Lab 1: Flame Test Name: Date: Lab Results Record the results of your flame tests. Compounds Flame Color lithium strontium calcium magnesium zinc copper barium manganese lead bismuth arsenic potassium Conclusions Why do different elements produce distinct colors in the flame test? Make sure to include a discussion of electrons in your answer (3 sentences required). Explain a reason why a flame test would not match the expected colors listed in the background
15. Tests were performed on a mystery solution to identify the components. A flame test resulted...
15. Tests were performed on a mystery solution to identify the components. A flame test resulted in a reddish flame. The solution produced a white solid upon addition of ammonium carbonate, ammonium phosphate, and ammonium sulfate. A halogen test gave a pale yellow-orange color in the hexane layer. Identify the metal and the halogen ions present in the solution. A) Li, Br B) Li, I C) Ca, Br D) Ca, I
Compare the flame test and solution reaction observations for the unknown to the observations for the known solution...
Compare the flame test and solution reaction observations for the unknown to the observations for the known solutions. Identify the metal present in your unknown solution and circle it below. Strontium Sodium Lithium Potassium Barium Calcium Report Sheet Questions For 1) and 2) below use all six metals (from above), but use each only once. 1. A fireplace log is available for the holiday season that burns with a green and red flame. Based on your observations, which elements produce...
Would you be able to get more data from a flame test if your detector or...
Would you be able to get more data from a flame test if your detector or camera could record ultraviolet light? what about gamma rays?
chidmate 18. You have carried out the ferric chloride test as part of one of your...
chidmate 18. You have carried out the ferric chloride test as part of one of your lab experiment. (a) What functional group(s) does it test for the presence of? (b) What is the reaction that occurs if that functional group is present? (c) What are strong choices for positive and negative controls? (d) What does a positive/negative test result look like? (e) Keeping in mind what sort of claim this test allows you to make, what do your results say...
18. You have carried out the ferric chloride test as part of one of your lab...
18. You have carried out the ferric chloride test as part of one of your lab experiment. (a) What functional group(s) does it test for the presence of? (b) What is the reaction that occurs if that functional group is present? (c) What are strong choices for positive and negative controls? (d) What does a positive/negative test result look like? (e) Keeping in mind what sort of claim this test allows you to make, what do your results say about...
If you dissolve 37 grams of lithium chloride in 37.5 milliliters of solution, what is the...
If you dissolve 37 grams of lithium chloride in 37.5 milliliters of solution, what is the molarity?
In the flame test if two ions have similar colors what will help you distinguish one...
In the flame test if two ions have similar colors what will help you distinguish one from the other?
in the flame test if two ions have similar colors what will help you distinguish one...
in the flame test if two ions have similar colors what will help you distinguish one from the other?
3. What tests would you use to identify a solution of FeCl3? 4. A flame test of a colorless solution gives a bright...
3. What tests would you use to identify a solution of FeCl3? 4. A flame test of a colorless solution gives a bright yellow color. When reacted with AgNO, a white precipitate forms that dissolves when HNO, is added. When HCl is added to the unknown solution, bubbles form. What is the compound in the colorless solution?
15. Tests were performed on a mystery solution to identify the components. A flame test resulted in a reddish flame. The solution produced a white solid upon addition of ammonium carbonate, ammonium phosphate, and ammonium sulfate. A halogen test gave a pale yellow-orange color in the hexane layer. Identify the metal and the halogen ions present in the solution. A) Li, Br B) Li, I C) Ca, Br D) Ca, I
Compare the flame test and solution reaction observations for the unknown to the observations for the known solutions. Identify the metal present in your unknown solution and circle it below. Strontium Sodium Lithium Potassium Barium Calcium Report Sheet Questions For 1) and 2) below use all six metals (from above), but use each only once. 1. A fireplace log is available for the holiday season that burns with a green and red flame. Based on your observations, which elements produce...
chidmate 18. You have carried out the ferric chloride test as part of one of your lab experiment. (a) What functional group(s) does it test for the presence of? (b) What is the reaction that occurs if that functional group is present? (c) What are strong choices for positive and negative controls? (d) What does a positive/negative test result look like? (e) Keeping in mind what sort of claim this test allows you to make, what do your results say...
18. You have carried out the ferric chloride test as part of one of your lab experiment. (a) What functional group(s) does it test for the presence of? (b) What is the reaction that occurs if that functional group is present? (c) What are strong choices for positive and negative controls? (d) What does a positive/negative test result look like? (e) Keeping in mind what sort of claim this test allows you to make, what do your results say about...
3. What tests would you use to identify a solution of FeCl3? 4. A flame test of a colorless solution gives a bright yellow color. When reacted with AgNO, a white precipitate forms that dissolves when HNO, is added. When HCl is added to the unknown solution, bubbles form. What is the compound in the colorless solution?
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