Magnesium and Beryllium have similar flame test results, but Calcium has a very different flame. Whatâs different about the available orbitals for Calcium that could account for this?
Magnesium and Beryllium have similar flame test results, but Calcium has a very different flame. Whatâs different about the available orbitals for Calcium that could account for this?
For unlimited access to Homework Help, a Homework+ subscription is required.
Related textbook solutions
Basic Chemistry
Principles of Chemistry Molecular Approach
Chemistry: Structure and Properties
Principles of Chemistry Molecular Approach
Chemistry: A Molecular Approach
Chemistry: A Molecular Approach
Principles of Chemistry: A Molecular Approach
Chemistry: The Central Science
Related questions
Data Table 1. Anion Confirmation Tests.
Chemical | Anion | Addition of AgNO3 | Addition of HCl |
NaBr | Bromide | It became white and cloudy | Still was white and cloudy |
Na2CO3 | Carbonate | Clear inside white and cloudy around the outside | Still white and cloudy but bubbles start to form |
NaCl | Chloride | Turn white cloudy on bottom clear on top | Still white cloudy on bottom clear on top |
NaI | Iodide | In the middle very dark and cloudy fades out lighter white around the middle | Became a little separate |
Na2SO4 | Sulfate | Clear | Became white and cloudy |
Na2S | Sulfide | Turn a brown color in the middle but separated from the clear | The brown becomes more separate from the clear |
Unknown #103 | CO3^2- | White and cloudy Small particles | Bubbles form white and cloudy |
Unknown #104 | S^2- | Turn brown color I the middle around clear | Some of the brown disappeared and become separate |
Data Table 2. Cation Flame Tests.
Chemical | Cation | Flame Observations |
KI | Potassium | LIGHT PINK |
CaCl2 | Calcium | RED |
LiOH | Lithium | FUSHA PINK |
NaCl | Sodium | ORANGE |
Cu(NO3)2 | Copper | TEAL |
Unknown #105 | Copper | TEAL |
Unknown #106 | Potassium | LIGHT PINK |
Unknown #107 | Calcium | RED |
Data Table 3. Complete Chemical Identification.
Chemical | Cation | Anion Test Observations | Anion | Complete Chemical Name and Formula |
Unknown #105 | Copper | with AgNO3: No chane | No3^2- | Copper(II) nitrate, Cu(NO3)2 |
Unknown #106 | Potassium | with AgNO3: In the middle very dark and cloudy fades out lighter white the middle | I- | Potassium iodide, KI |
Unknown #107 | Calcium | With AgNO3: Turn white cloudy on the bottom on top | Cl- | Calcium chloride, CaCl2 |
1. Use your results and observations in Data Tables 1, 2, and 3, to create a flow chart for the identification of an unknown (both an unknown anion and cation), using the AgNO3 and HCl confirmation tests and the cation flame tests.