Experiment Data And Calculations Determination Of The Equilibrium Constant For A Chemical Reaction Mixture 1 2 Volume 1 (36.23 KiB) Viewed 31 times
Experiment Data And Calculations Determination Of The Equilibrium Constant For A Chemical Reaction Mixture 1 2 Volume 2 (26.03 KiB) Viewed 31 times
Experiment Data and Calculations: Determination of the Equilibrium Constant for a Chemical Reaction. Mixture 1 2 Volume in ml. 2.00×10 M Fe(NO₂), 5.00 5.00 5.00 5.00 5.00 Volume in ml... 2.00 × 10 M KSCN 1.00 2.00 3.00 4.00 5.00 Volume in ml. Water 4 ML 3ML 2 ML ImL Отк Method I Absorbance 0.138 0.215 0.331 0.446 6.5.11 Method IT Depth in mm Standad x 10M. FSCN³ in Mixtures 1 to 5 is found by Equation-7 Unknown [FeSCN x 10 M x 10 M x 10 M x 10+M x 10 M -If-Method II was med. [FeSCN1 Processing the Data Fe(aq) + SCN (aq) A. Calculation of K, assuming the reaction: (1 FeSCN³(aq) This calculation is most easily done by following Steps I through 5 in the discussion. Results are to be entered in the table on the following page. If you are using Excel, se up the table as we have, and follow the directions that follow Step 1 Find the initial number of moles of Fe" and SCN in the mixtures in test tubes I through 5. Use Equation 3 and enter the values in the first two columns of the table Step 2 Enter the experimentally determined value of [FeSCN2] at equilibrium for each of the mixtures in the next to last column in the table. Use Equation 3 in the fith colum of the table. Note that this is also the number
Step 3 From the aber of moles of Fe" and SCN saitially present in each mhure, and the auber of moles of Fe" and SCN used up in forming FeSCN, cal culate the number of moles of Fe" and SCN that remain in each aishere at espaibbean Use Equation 4 Enter the results in columns 3 and 4 of the table. Use Equation 3 and the results of Step 3 to find the concentrations of all of the species at equilibrian. The volme of the mixture is 10.00 ml., or 0.0100 liter in all cases Enter the values in columus 6 and 7 of the table. Step 4 Calculate K, for the reaction for each of the mixhares by substinating values for the expuilibrian concentrations of Fe", SCN, and FeSCN in Equation 2. Calculate the mean value for K, and the standud deviation (See Appendix VIII) Step 5 Step 6 Mixture Fe Initial No. Moles <10+ SCN Fe x 10 Equilibrium No. Moles SCN *10* a gy FeSCN x 30* [Fe] Equilibrium Concentrations x 10 M [SCN] 10 M [FSCN³] x 10 M
Join a community of subject matter experts. Register for FREE to view solutions, replies, and use search function. Request answer by replying!