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A student was given a test tube containing a white solid which may have contained Ag, Pb or Hg. The student added hot wa
Posted: Thu Jun 30, 2022 5:56 pm
by answerhappygod
- A Student Was Given A Test Tube Containing A White Solid Which May Have Contained Ag Pb Or Hg The Student Added Hot Wa 1 (15.83 KiB) Viewed 41 times
A student was given a test tube containing a white solid which may have contained Ag, Pb or Hg. The student added hot water to the test tube, heated it and then decanted the water into a second tube, retaining the solid. After adding a solution of 0.1 M K2CrO4 to the hot water, a yellow precipitate was formed. Then ammonia was added to the original solid which produced a grey precipitate. After being acidified with 0.1 M nitric acid, no further solid was formed. Which ions were present? lon #1: lon #2: