assignment2

assignment2 - Assignment: Homogeneous Chemical Equilibrium...

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Assignment: Homogeneous Chemical Equilibrium 1 Homogeneous Chemical Equilibrium MSDS: Ethyl acetate This should be included in the EXPERIMENTAL section. The following items should be included if possible. Hazards : Handling & Storage : Disposal : SAMPLE CALCULATIONS : The correct formula for G38 is =(C38/$E$32)*1000/F38. Using this format, write the spreadsheet formulae for F58, J59, B62, and H69. PRELABORATORY QUESTIONS : 1. Estimate the number of grams of KHP (204.23g/mol) that is needed to standardize a ~1.5M NaOH solution using no more than 10-mL NaOH? Ans . 3-g 2. Use the following table, estimate the total minimum amount of chemicals that are need for each person for this experiment. Explain why the volume of NaOH is given and what is the significance of 300-mL? Chemicals Amount KHP(g) ~3MHCl (mL) ~1.5M NaOH (mL)* 300 CH 3 CO 2 H (mL) CH 3 CH 2 OH (mL) CH3CO 2 CH 2 CH 3 (mL) D.I. H 2 O (mL) Phenolphthalein (Drops) 3. What volume of 50% NaOH solution is needed at room temperature to prepare 300-mL 1.5M NaOH solution? (You will need the specific gravity of NaOH to do this problem. Go to WebCT Lab Manual Appendix – NaOH_specific_gravity and use the interpolation method to find the specific gravity of NaOH at 25 o C) Ans. 24-mL POSTLABORATORY QUESTIONS : 1.
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This note was uploaded on 10/28/2010 for the course CHEM 100A taught by Professor Dai during the Winter '06 term at UCSD.

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assignment2 - Assignment: Homogeneous Chemical Equilibrium...

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