Homework Answers
Q8.
This could be a good idea sinde sodium is not likely to react
the chromate ion will react, since it is very oxidative(it has plenty of oxygens)
it could:
- change color of solution
- form precipitate
- form gas
therefore, it could be a good idea as "special" test...
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Should sodium chromate be added directly to an unknown as a "special" test? Explain.
Solid silver nitrate is slowly added to 75,0 mL of a 0.0346 M sodium chromate solution....
Solid silver nitrate is slowly added to 75,0 mL of a 0.0346 M sodium chromate solution. The concentration of silver ion required to just initiate precipitation is
Solid barium acetate is slowly added to 150 ml of a 0.0681 M sodium chromate solution....
Solid barium acetate is slowly added to 150 ml of a 0.0681 M sodium chromate solution. The concentration of barium ion required to just initiate precipitationis
14a) Sodium chromate is added to a solution of 0.0060 M Sr? What is O if...
14a) Sodium chromate is added to a solution of 0.0060 M Sr? What is O if the final concentration of Cros? is 0.0030 M? a. 7.2 x 10 b. 3.6 x 105 c. 1.8x 10-5 d. 9.0 x 10
5 pts 14b)Sodium chromate is added to a solution of 0.0060 M Sr24 Will a precipitate...
5 pts 14b)Sodium chromate is added to a solution of 0.0060 M Sr24 Will a precipitate form if the final concentration of Cro?.is 0.0030 M? Yes No The system is at equilibrium Not enough information to determine 5 pts
A.) Solid lead acetate is slowly added to 50.0 mL of a 0.0624 M sodium chromate...
A.) Solid lead acetate is slowly added to 50.0 mL of a 0.0624 M sodium chromate solution. The concentration of lead ion required to just initiate precipitation is __M B.) Solid potassium hydroxide is slowly added to 50.0 mL of a 0.0636 M nickel(II) acetate solution. The concentration of hydroxide ion required to just initiate precipitation is __M
Solid lead nitrate is slowly added to 125 mL of a 0.0598 M sodium chromate solution. The concentration of lead ion requi...
Solid lead nitrate is slowly added to 125 mL of a 0.0598 M sodium chromate solution. The concentration of lead ion required to just initiate precipitation is
15. An unknown compound has a chemical formula of C,H,O. When chromic acid (containing chromate ions)...
15. An unknown compound has a chemical formula of C,H,O. When chromic acid (containing chromate ions) was added to the unknown, the solution remained orange. The unknown was soluble in water. When NaOH and Kl/iodine were added to the unknown, a yellow precipitate formed. What is the structure of the unknown compound? 16. Would you expect 2-octanone to be soluble in water? Would you expect butanal to be soluble in water? Would either of them be more soluble in hexane...
Two unknown compounds were tested in a sodium iodide in acetone test and a silver nitrate...
Two unknown compounds were tested in a sodium iodide in acetone test and a silver nitrate in ethanol test. The observations of these tests are given below. Use structures A-E to the right to answer the following questions. Given these observations, what are the identities of Unknowns 1 and 2? Unknown 1 Unknown 2 Do you except reaction of bromobenzene (B) in the silver nitrate in ethanol test to be fast, slow or nonreactive? Why? Do you except Structure E...
1. Solid barium sulfide is slowly added to 75.0 mL of a 0.178 M sodium sulfite...
1. Solid barium sulfide is slowly added to 75.0 mL of a 0.178 M sodium sulfite solution until the concentration of barium ion is 0.0288 M. The percent of sulfite ion remaining in solution is %. 2.Solid silver nitrite is slowly added to 125 mL of a potassium carbonate solution until the concentration of silver ion is 0.0134 M. The maximum amount of carbonate remaining in solution is M. 3.Solid sodium chromate is slowly added to 75.0 mL of a silver acetate...
Explain why there is no reaction when sodium is added to a solution of methyllithium but...
Explain why there is no reaction when sodium is added to a solution of methyllithium but when gallium is added to a solution of methyllithium, trimethylgallium is formed.
Solid silver nitrate is slowly added to 75,0 mL of a 0.0346 M sodium chromate solution. The concentration of silver ion required to just initiate precipitation is
Solid barium acetate is slowly added to 150 ml of a 0.0681 M sodium chromate solution. The concentration of barium ion required to just initiate precipitationis
14a) Sodium chromate is added to a solution of 0.0060 M Sr? What is O if the final concentration of Cros? is 0.0030 M? a. 7.2 x 10 b. 3.6 x 105 c. 1.8x 10-5 d. 9.0 x 10
5 pts 14b)Sodium chromate is added to a solution of 0.0060 M Sr24 Will a precipitate form if the final concentration of Cro?.is 0.0030 M? Yes No The system is at equilibrium Not enough information to determine 5 pts
15. An unknown compound has a chemical formula of C,H,O. When chromic acid (containing chromate ions) was added to the unknown, the solution remained orange. The unknown was soluble in water. When NaOH and Kl/iodine were added to the unknown, a yellow precipitate formed. What is the structure of the unknown compound? 16. Would you expect 2-octanone to be soluble in water? Would you expect butanal to be soluble in water? Would either of them be more soluble in hexane...
Two unknown compounds were tested in a sodium iodide in acetone test and a silver nitrate in ethanol test. The observations of these tests are given below. Use structures A-E to the right to answer the following questions. Given these observations, what are the identities of Unknowns 1 and 2? Unknown 1 Unknown 2 Do you except reaction of bromobenzene (B) in the silver nitrate in ethanol test to be fast, slow or nonreactive? Why? Do you except Structure E...
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