1 For This Lab You Will Be Using An Anionic Dye Indicator What Is The Indicator What Color Will Indicate The Endpoin 1 (48.24 KiB) Viewed 26 times
1 For This Lab You Will Be Using An Anionic Dye Indicator What Is The Indicator What Color Will Indicate The Endpoin 2 (48.24 KiB) Viewed 26 times
1. For this lab, you will be using an anionic dye indicator. What is the indicator? What color will indicate the endpoint of the titration for this lab? 2. Explain why adding enough EDTA to a water sample (containing the indicator in Question #1) would cause the water sample to change color. 3. In a titration of a 25 mL water sample, it took 17.5 mL of 0.100 M EDTA to reach the endpoint. How many mole of EDTA is in 17.5 mL of 0.100 M EDTA? 4. In a titration of a 25 mL water sample, it took 17.5 mL of 0.100 M EDTA to reach the endpoint. Approximately how many total moles of Cat and Mg?" are present in the water sample? 5. If total water hardness is determined by the total concentrations of Cat and Mg?", explain why total water hardness is given only as ppm CaCO3? 6. In a titration of a 25 mL water sample, it took 17.5 mL of 0.100 M EDTA to reach the endpoint. What is the total water hardness (expressed as ppm CaCO3)?
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