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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 10mL NaOH?
Ans
. 3g
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 300mL?
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 300mL 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.
24mL
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.
 Winter '06
 Dai
 Equilibrium

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