Identification of Metallic Ions

Ocean County College Department of Chemistry Identification of tinny Ions Purpose The purpose of this lab exercise was to per build and observe the beam runnings of some alkali and alkaline earth metal ions. When electrons in auriferous ions ar grounded, their configuration is stable. In former(a) words, the loosely bound electrons in the valence shell of the atom are satisfied at their poor force state. They do not require to be balanced by emitting any type of radiation or receiving any additional electrons.However, these stable, grounded electrons in the gold ions become excited to higher energy levels due to the presence of heat, thus losing their stability. They absorb heat energy, but counteract by release the absorbed energy to become grounded once again. This released energy comes in the form of electromagnetic energy. Some of the released heat energy is in the visible swinging source region. The metallic ions being heated disperse unique tinges which are charact eristic ranging from a lower energy (red) to a high energy (violet) and some colors in between.We can learn much almost the element were working with by simply observing the color flame that is produced. Flame tests are a common confirmation test to severalise specific elements. Procedure I began the lab by preparing a safe work area and the required metallic ions. The ions used in this lab were as follows Barium process, Calcium process, Cupric Nitrate, Lithium Nitrate, potassium Nitrate, Sodium Nitrate, Strontium Nitrate, and an unknown solution. I primed(p) 0. 5 mL of sodium nitrate into a well on the 24-well plate, recording its location.I placed 0. 5 mL of the other 7 solutions in 7 other wells on the plate, recording their locations as well. I slopped the point in time of a cotton swab into the solution of sodium nitrate and passed the soaked end through the flame several times until I detect a color change. I recorded all observations in the selective information Tabl e chart below. I repeated these steps for the other 7 solutions. Data Table Observations Column1 Column2 Metallic Ion Flame Color Sodium Nitrate Orange/yellow Strontium Nitrate thick Crimson ruddyPotassium Nitrate Violet Barium Nitrate Green/ chickenhearted Lithium Nitrate Deep Crimson Red Calcium Nitrate Orange Cupric Nitrate Blue/Green Unknown (Lithium) Deep Crimson Red Conclusion The flame test was a achievement and satisfied my learning objective. Since every metal gives the flame a disparate color, I was able to identify most of the given elements with a delicate room for error. The unknown solution gave off a deep red-faced red glow which could have been either strontium nitrate or lithium nitrate.I went with the latter after doing the test several times, comparing the glows. Dimming the light in the room helped tremendously to get a better melodic theme of the true color of each flame. Although this method isnt perfect to identify more unknown ions due to the slight va riations of colors, it does the job. The low energy metallic ions include were Strontium and Lithium. The moderate energy ions were Sodium, Barium, and Calcium. The higher energy ions were slovenly person and Potassium.