Metal Oxalate Compounds Report - Synthesis and Titration of Oxalate Compounds By Ravi Jindal Partners Abhi Malhotra Mike Davidson Rebecca Cohen Lab

Metal Oxalate Compounds Report - Synthesis and Titration of...

This preview shows page 1 - 4 out of 7 pages.

Synthesis and Titration of Oxalate Compounds By Ravi Jindal Partners: Abhi Malhotra, Mike Davidson, Rebecca Cohen Lab Conducted: October 16 2013 and October 30 2013 Lab Due: November 6, 2013 Section: B03 TA: Ryan Honor Pledge: I did not copy this work from other students or old lab reports. X___________________________________________________
Image of page 1
DATA AND RESULTS Week 1 – Synthesis of a Metal Oxalate Compound Table 1 – Data for Synthesis of a Metal Oxalate Compound: Cobalt Chloride Hexahydrate (CoCl 2 6H 2 O) Oxalic Acid Dihydrate (H 2 C 2 O 4 2H 2 O) Molar Mass (g/mol) 237.93 126.07 Number of Moles Used (mol) 0.00985 0.0100 Mass Used (g) 2.344 1.265 Mass of isolated product [Co(C 2 O 4 )(H 2 O) 2 ]: 1.65 grams Observations of Synthesis : A pinkish/brownish color was observed when the two reactants were mixed. The resulting crystals were a dark brown color. After they were allowed to dry for two weeks, they became a significantly lighter shade of brown. Week 2 – Redox Titration of a Metal Oxalate Compound Table 2 – Data for Standardization of Titrant: Mass Sodium Oxalate (g) Volume Titrant (mL) 0.101 30.50 0.101 30.45 0.101 30.47 Table 3 – Data for Titration of Metal Oxalate Compound: Mass Co(C 2 O 4 )(H 2 O) 2 (g) Volume KMnO 4 (mL) 0.107 22.30 0.109 24.00
Image of page 2
Discussion The purpose during the first part of the experiment was to synthesize a metal oxalate compound, Co(C 2 O 4 )(H 2 O) 2 , from oxalic acid dehydrate and cobalt chloride hexahydrate. In order to synthesize the compound, we used 0.00985 molesof Co Cl 2 6 H 2 O and 0.010034 moles of H 2 C 2 O 4 2 H 2 O . Because of the 1 to 1 ratio between the two reactants, the cobalt chloride hexahydrate was the limiting reactant. The reactants were also in a 1 to 1 ratio with the product, so 0.00985 moles of Co(C 2 O 4 )(H 2 O) 2 were expected to be made. This means that the theoretical yield was 1.80 grams of Co(C 2 O 4 )(H 2 O) 2 . In actuality, we obtained 1.65 grams of the product. This means the percent yield was 91.7%.
Image of page 3
Image of page 4

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture