Suppose an unknown dissolves in water to produce a solution with a pH of 2.4. Wh

Question

Suppose an unknown dissolves in water to produce a solution with a pH of 2.4. Which of the following reagents would be useful in obtaining more information about the functional group in the unknown? 6 M HCl solution Saturated sodium bicarbonate solution 3 M NaOH solution Explain your answer: Suppose a solid unknown is insoluble in water. Which of the following reagents would be useful in obtaining more information about the functional group in the unknown? 6 M HCl solution 3 M NaOH solution Dilute NH3 solution More than one answer is correct. Explain your answer: Suppose a student is doing Part C of the experiment. The student gets to the point where all the 6 M HCl has been added, but no precipitate of aspirin forms. What should the student do next? Conclude that the original sample contained no aspirin. Add more HCl even though the directions do not call for it. Stir the liquid to which the HCl has been added. Explain your answer: It is suspected that a water-insoluble solid unknown is an amine. Which of the following would be useful in determining the validity of the suspicion? 6 M HCl solution 3 M NaOH solution Red litmus paper Explain your answer: A water-soluble unknown is found to form a solution with a pH near that of pure water. Which of the following functional groups is indicated by this information? Carboxylic acid Amine Amide No answer is correct. Explain your answer:

Explanation / Answer

in first)

2.4 PH mean highly acidic so HCl solution

2) c dilute NH3 reacts with more functional group produces different product

3) b

4) a amine is basic compond so it reacts with HCl

5) c carboxylic acid is more acidic

amine are more basic

so it can be c

i explained my answer number 1 ...as much i can

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