3. Place 0.5 mL of 0.5 M HNO, into each of the five test tubes. 4. Add: Test tube A: 1 drop potassium thiocyanate solution, 1 drop ferric nitrate solution. Test tube B: 1 drop potassium thiocyanate solution, 9 drops ferric nitrate solution. Test tube C: 5 drops potassium thiocyanate solution, 5 drops ferric nitrate solution. Test tube D: 9 drops potassium thiocyanate solution, 1 drop ferric nitrate solution. Test tube E: 9 drops potassium thiocyanate solution, 9 drops ferric nitrate solution. Compare the test tubes and record your observations, especially with result to Le Châtelier's Principle as well as the effects of concentration on color intensity (Beer's Law).

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