URGENT CHEMISTRY PROBLEM?! HELP PLEASE?!?

Posted on 2017-02-13 06:35:00 in Chemistry by DEVLMSTR

Use the following data to calculate the mass percent ethanol in a 50.532 g sample. 
0.1956 M K2Cr2O7 added to solution B. 

31.05 mL of 0.05432 M Fe2+ needed to titrate an aliquot of solution B. 

a) mmol Fe2+ added to titrate sample. 

b) mmol Cr2O72- in excess in titrated sample. 

c) mmol Cr2O72- in excess in solution B. 

d) mmol Cr2O72- added to solution B. 

e) mmol Cr2O72- reacted with C2H5OH in solution B. 

f) mmol C2H5OH in solution B. 

g) mmol C2H5OH in solution A. 

h) mass percent C2H5OH in original unknown beer sample.

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