Question

3. Ifthe50.00mLsamplefromproblem2abovewastitratedwitha0.00505MEDTA, what volume (in milliliters) of EDTA solution would be needed to reach the endpoint? 4. Agroupofstudentstitrateacalciumcarbonatestandardsolutionrepeatedlyinsix experimental trials. Based on the six trials, the group determines that the average concentration of the standard is 70.5 ppm with a standard deviation of 0.8 ppm. Using the equation for the Student’s t confidence interval found on page 41 of your lab manual and the t-value for a 95% confidence interval (refer to table on page 41), calculate the confidence interval for which there is a 95% chance of finding the “true value” of the standard solution’s concentration based on the data. Put your answer in the format # lower limit < “true value” < # upper limit.

Answer 1

What was problem 2? Not sure which question you want answered here.