Using the data below collected in Part E, indicate the approximate pH range of unknown solution S tested. Indicator Tested Observations Bromocresol Green Blue Benzopurpurin 4B Red Phenol Red Orange O pH = 5.0 - 73 0 pH = 3.5 - 6.8 O pH = 5.0 - 6.8 O pH = 6.8 - 73 O pH = 3.5 - 73 Using the data below collected in Part E, indicate the approximate pH range of unknown solution S tested. Indicator Tested Observations Bromocresol Green Yellow Benzopurpurin 4B Red Phenol Red Yellow O pH = 4.3 - 8.2 pH = 4.3 -6.8 O pH = 6.8 - 8.2 O pH = 3.5 - 6.8 O pH = 3,5 - 43 Below are pH ranges for selected acid-base indicators found in Appendix E. You may find them helpful when responding to some of the questions that follow. Indicator Low pH Color Transition pH Range High pH Color Benzopurpurin 4B Violet 2.6 - 3.5 Red Bromocresol green Yellow 4.3 – 5.0 Blue Phenol Red Yellow 6.8 - 7.3 Red Phenolpthalein Colorless 8.2 - 9.0 Fuchsia ACTIVITY 3 Part E. Characterization of an unknown S solution. Equipment Chemicals 2-mL microcentrifuge tubes unknown S (BLP S - XXXX) microspatula distilled water various beakers 0.04 % bromocresol green indicator solution 10-ml graduated cylinder 0.04 % phenol red indicator solution weigh boats 0.04 % benzopurpurin 4B indicator solution Common Equipment analytical and top-loading balances General Instructions Dissolve 0.49-0.51 g of unknown S in 10 mL distilled water; record the exact mass of solid used and your unknown number in your lab notebook. Using only the reagents and equipment listed above, determine if unknown S is acidic, basic, or neutral when dissolved in water. Additionally, determine the range (in whole numbers) of possible pH values for this solution. Note: in preliminary testing, a colorless solution was observed when your unknown was combined with phenolphthalein indicator.