1.

The table below shows the data for three titrations to determine the concentration of a NaOH solution With standard 0.200 M HCl solution using phenolphthalein as the indicator Which explanation best accounts for the lower value of the NaOH M in Trial 3 ?A. Some of the neutralized solution from Trial 2 was left in the flask for Trial 3.B. The numner of drops of phenolphtalein was doubled in Trial 3.C. The HCl concentration was used as 0.250 M in the NaOH molarity calculation .D. A few drops of NaOH solution were spilled on the desktop in Trial 3.

Answer» Correct Answer - d


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