What is two types of ionization method in GC MSD?

A student performed three aqueous layer titrations in Part 1 and they reported the following measurements: Final Burette Reading Initial Burette Reading Volume of Aqueous Aliquot Final Burette Reading Initial Burette Reading Volume of Sodium Thiosulfate Determination #1 16.33 mL 6.50 mL 9.83 m 31.98 mL 0.76 mL 31.22 mL Determination #2 Determination #3 26.76 mL 16.33 mL 10.43 mL 33.62 mL 0.88 mL 32.74 mL 36.95 mL 26.76 mL 10.19 mL 32.22 mL 0.41 mL 31.81 mL Which determinations were the student's 'best two'? Calculate the percent difference for the 'best two' and show the complete calculation. Note that the concentration of standard sodium thiosulfate, which the student used, is unknown.

The table shows a series of standard additions of Cu(II)to acidified tap water samples measured by anodic stripping voltammetry at a platinum electrode. The unknown and all standard additions were made up to the same final volume. a. What chemical reaction occurs during the stripping stage of the analysis?b. Plot absorbance as a function of the concentration of Cu (II) standard. Determine the equation of the line and the X intercept. Find the concentration of Cu(II) in the water.

Save Answer Question 2 The ionization constant (Ka) equation of a monoportic weak, HA, acid is given by ca? Ka = (1–0) The use of conductivity meter to test a 0.106 M solution of this weak acid gives a specific conductance, K, 20.24 µS.cm-1. What would be the pKa, (-long Ka), of the acid, if its limiting molar ionic conductivities are d4 = 243 and . = 74 S.cm2 mol-1 ? O A. 5.53 ОВ. 3.12 O C.6.00 O D. 4.41 O E. 3,62