A) The Eriochrome Black T indicator is mistakenly omitted. What is the color of the analyte (standard Ca^2+ solution)?

 

Describe the appearance of the analyte with the continuedaddition of the Na^2H^2Y solution? Explain?

 

B) The Dispensing of the Na^2H^2Y solution from the buret isdiscountinued when the solution turns purple. Because of this technique error, will the reported molar concentration of theNa^2H^2Y solution be too high, too low, or unaffected?

 

C) The Dispensing of the Na^2H^2Y solution from the buret isdiscountinued when the solution turns purple. Because of this technique error, will the reported hardness of the water sample be too high, too low, or unaffected?

Help Experiment 29 Post lab question #2 The solid KIO3 is diluted shy of the 100mL mark in the volumetric flask. does this technique error result in a reported molar concentration of KIO3 that is too high or too low ? Explain. As a result will the reported molar concentration of the standardized Na2S2O3 solution be too high, too low, or unaffected? Explain

1. If an air bubble was initially in the buret tip but wasdispensed during the back titration of the unreacted HCl. As aresult of this technique error, will the reported amount of antacidin the sample be reported as, too low, too high or unaffected?Briefly explain.

2. An unkown amount of monoprotic base reacted with 25.00 ml of0.1098 M HCl. The resulting solution was titrated with 10.55 mL of0.1175 NaOH solution. How many moles of base were present in theunknown sample?