Question
Which reagent can be used to precipitate Group II cations? After dissolving the brown residue in 6M HCl, followed by addition of 0.1M KSCN. A solution with deep red color was obtained. Which is the possible group-III cation present in the brown residue? Is the following statement true or false? A standard NaOH solution can be prapared by dissolving an accurate amount of NaOH into a known volume of aqueous solution. The reaction of (CH2CSNH2) with Cd at pH -0.5 forms a _ Under what condition Group II cations can be precipitated by S?_ The reaction below has an equilibrium constant of 0.0030 at 298K and 1 atm. Which of the following process will lead to the greatest solubility of AgCl? (Assume same amount of each reagent (in volume) is added.)
Explanation / Answer
15-b
16-c
17-a
18-c
19-c
20-a