Data Table and Results (Part B - Determining Solution Concentration) Measurement Volume of Solution in Evaporating Dish Mass of Evaporating Dish Mass of Evaporating Dish and Solution Mass of Evaporating Dish and Residue For each trial, calculate: 1. Mass of the solution. 1. 839g-60.1369=1.703g 61 4279-60.135g=1.2929 2 Mass of the residue. (0.1859-60.136g=0.049g 60.166g-60.135g=0.031g 4 Molarity of the solution. Trial 1 3 Mass percent of the solution. 1.703g Solute (1.703g+10.00ML) 1.2929 Solute (1.2929+10.00mL) 100-11.447 0.049gNaCl 1mol 0.031gNaci. ImolNaci 58.449 Nac 10.00mL10.00ml 60.136960.135g Kel. 839g 61.4279 60.1859 60.1669 0.01002 Trial 2 58.449 0.01002 Trial 3 -100=14.557. 0.00838m 0.836m Nach = 0.00053mNach 0.053mNach mol L 10.00mol 1L = 0.01 5. Show your calculation for the % error between the molarity you calculated and the true value given to you by your instructor. 10.600-0.053moll 10.836mol-0.6001 100 = 39.33% 0.600 0.600 mol =9.11% Write your unknown sample # and the true value for its molarity in the box below:

Data Table and Results (Part B - Determining Solution Concentration) Measurement Volume of Solution in Evaporating Dish Mass of Evaporating Dish Mass of Evaporating Dish and Solution Mass of Evaporating Dish and Residue For each trial, calculate: 1. Mass of the solution. 1. 839g-60.1369=1.703g 61 4279-60.135g=1.2929 2 Mass of the residue. (0.1859-60.136g=0.049g 60.166g-60.135g=0.031g 4 Molarity of the solution. Trial 1 3 Mass percent of the solution. 1.703g Solute (1.703g+10.00ML) 1.2929 Solute (1.2929+10.00mL) 100-11.447 0.049gNaCl 1mol 0.031gNaci. ImolNaci 58.449 Nac 10.00mL10.00ml 60.136960.135g Kel. 839g 61.4279 60.1859 60.1669 0.01002 Trial 2 58.449 0.01002 Trial 3 -100=14.557. 0.00838m 0.836m Nach = 0.00053mNach 0.053mNach mol L 10.00mol 1L = 0.01 5. Show your calculation for the % error between the molarity you calculated and the true value given to you by your instructor. 10.600-0.053moll 10.836mol-0.6001 100 = 39.33% 0.600 0.600 mol =9.11% Write your unknown sample # and the true value for its molarity in the box below:

Appl Of Ms Excel In Analytical Chemistry

2nd Edition

ISBN:9781285686691

Author:Crouch

Publisher:Crouch

Chapter14: Chromatography

Section: Chapter Questions

Problem 9P

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